Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.

Reference document setting out transitional provisions for UN R48 across series 03 through 09. Specifies dates and conditions under which Contracting Parties must grant approvals only to vehicles meeting requirements of each series, timeframes for accepting approvals under preceding series, and dates from which prior approvals need no longer be recognized. For series 03, provisions apply from 10 October 2007 onwards with different dates for different vehicle categories and marking types. Series 04 transitions begin 07 February 2011 for M₁ and N₁ vehicles and 07 August 2012 for other categories. Series 05 applies from 30 January 2015. Series 06 from 18 November 2017. Series 07, 08, and 09 include staggered implementation dates through 2031 depending on vehicle category.

Document setting out transitional provisions for UN R53 covering the 01 to 04 series of amendments. Provisions specify dates and timeframes for Contracting Parties’ obligations regarding approval of vehicle types with respect to lighting and light-signalling devices, including: 60 months following entry into force of Supplement 10 to the 01 series; 48 months following the 02 series; 1 September 2023 for the 03 series; and 1 September 2028, 2030 for the 04 series. Provisions address acceptance of existing approvals, extensions thereof, and vehicles not affected by changes.

Document for reference containing transitional provisions applicable to the 01, 02, and 03 series of amendments to UN R74. For the 01 series: Contracting Parties shall grant approvals only if vehicle types with regard to number and mode of installation of lighting and light-signalling devices correspond to requirements, with 24 months entry into force and a four-year grace period. For the 02 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2023, with continued acceptance until 1 September 2028 for approvals first issued before that date. For the 03 series: Contracting Parties shall not be obliged to accept type-approvals to the preceding series first issued after 1 September 2028, with acceptance required until 1 September 2030 for approvals first issued before that date.

Document presenting transitional provisions for UN R86 covering the 01, 02, and 03 series of amendments. For the 01 series: Contracting Parties shall not refuse type approvals as amended by the 01 series from its entry into force; from 24 months after entry into force, shall grant approvals only to vehicles meeting 01 series requirements; shall not refuse extensions of existing approvals; shall not refuse national or regional type approval of vehicles approved to the preceding series until 24 months after entry into force; and are not obliged to accept preceding series approvals from 24 months after entry into force. For the 02 series: Contracting Parties shall not refuse type approvals as amended by the 02 series from its entry into force; are not obliged to accept 01 series approvals first issued after 1 January 2023; shall accept 01 series approvals first issued before 1 January 2023 until 1 January 2025; are not obliged to accept 01 series approvals from 1 January 2025; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series. For the 03 series: Contracting Parties shall not refuse type approvals as amended by the 03 series from its entry into force; are not obliged to accept preceding series approvals first issued after 1 September 2028; shall accept preceding series approvals first issued before 1 September 2028 until 1 September 2030; are not obliged to accept preceding series approvals and extensions from 1 September 2030; shall continue to accept preceding series approvals for vehicle types not affected by 03 series changes; may grant approvals according to any preceding series; and shall continue to grant extensions to any preceding series.

Guidelines establishing requirements for installation, arrangement, position and geometric visibility of rear marking plates on slow-moving vehicles and their trailers which, by construction, cannot travel faster than 30 km/h. At least one rear marking plate shall be type approved and meet regulation requirements, with apex directed upwards and positioned at the rear of the vehicle between 250 mm and 1,500 mm above ground. The plate must lie within 5° of a transverse vertical plane perpendicular to the vehicle’s longitudinal axis and face rearwards, with horizontal visibility of 30° inwards and outwards and vertical visibility of 15° above and below horizontal.

Proposal to amend the Introduction to clarify requirements for approval markings and the Unique Identifier conditional upon access to a secure internet database, amend para. 3.3.1.1. to specify space for the Unique Identifier or approval marking, amend para. 3.3.1.3. to reference Table 1 and Annex 10 for marking arrangements, add new para. 3.3.2.5. for a vertical arrow on devices with reduced light distribution, delete para. 3.3.3. regarding the Unique Identifier format, renumber para. 3.3.4. as para. 3.3.3., amend paras. 3.3.5. and 3.3.6. to clarify marking location and grouped lamps, amend para. 3.5.3.1. to verify stability of optical properties and colour, amend para. 5.1. to list retro-reflector classes, amend paras. 5.1.2., 5.1.3.1., and related provisions to adjust sample numbers and test procedures following exclusion of colour-fastness testing, amend para. 5.2.3.3. to reference the correct heat resistance test part, amend paras. 5.2.5.1.1. and 5.2.6.3. and add Table 8 for daytime colour specifications, delete para. 5.2.5.2.1. regarding maximum retro-reflection values for Classes D and E, renumber Tables 8, 9, and 10 as Tables 9, 10, and 11 respectively, amend Annex 1 Item 5. and add provision for Unique Identifier position, amend Annex 5 para. 8.1.4. to correct cross-reference, amend Annex 6 Parts 2 and 4 provisions for coefficient measurement and corrosion test references, and amend Figure A10-I to remove diametrically opposite requirement for class symbols.

Proposal to amend para. 3.1. and 3.2. of Annex 5 to harmonize terminology by replacing ‘light emitting surface’ with ‘illuminating surface’, amend para. 7.3. of Annex 5 to specify minimum and maximum dimensions for the fluorescent or retro-reflective triangle and red retro-reflective border, amend para. 1.1. of Part 1 of Annex 7 to clarify the wording of visual inspection requirements for retroreflectors following chemical testing, and delete Annex 11 containing guidelines for installation of rear marking plates on slow-moving vehicles.

Progress report on the GRE-IWG SLR’s work to simplify UN Lighting Installation Regulations. The document presents baseline documents for UN R48, UN R53, UN R74, and UN R86, with editorial review and technical amendments. Stage 2/Step 2 submissions include consolidated texts and amendments highlights for each regulation, old transitional provisions, and proposals for corrections to UN R149 and UN R150. Ongoing discussions address rear direction indicator visibility, apparent surface definitions, and single lamp separation distance. The SLR package is scheduled for informal submission at GRE-95 in October 2026, final formal submission at GRE-96 in April 2027, and adoption at WP.29 in November 2027.

Presentation on baseline amendments to UN R48 series 10, highlighting major editorial work including numerous editorial harmonisations and consistency improvements throughout the text, restructure of sub-paragraphs 6.×.4. and 6.×.5., improvements of paragraphs 5.18 to 5.20 on movable components, new informative annexes for lamp positioning and geometric visibility angles, addition of work lamp definition and installation requirements in new paragraph 6.30, updated references from R.E.3 Rev.7 to Rev.8, updated transitional provisions, clarifications on technological neutrality of light sources and non-replaceable light sources, and harmonisation among installation regulations aligning provisions in UN R48 with those in UN R53 and UN R74.

Baseline document for UN R48 Stage 2 / Step 2 incorporating all agreed modifications from SLR meetings, reflecting changes documented in SLR-63-01/Rev.1, SLR-64-03, SLR-64-11, SLR-66-01, SLR-68-13/Rev.3, SLR-72-03/Rev.3, SLR-75-05/Rev.2, WP.29/2024/28 (BL09), WP.29/2025/36 (Sup.1), WP.29/2025/117 (Sup.2), WP.29/2026/33 (Sup.3), WP.29/2026/163 (Sup.4), and GRE-94-25/Rev.2, including updated IEC proposal regarding lighting source technological neutrality. Document identifies open points on apparent surface, direction-indicator visibility against stop lamps, and transitional provisions consistency with IWVTA guidelines.

Amendments to UN R86 series 04 align requirements with EU standards. Direction-indicator lamps (DIL) scope expanded for arrangement D to all tractor lengths, with side retro-reflectors and marker lamps required when tractor length exceeds 4.6 m. Slow-moving vehicle rear marking plate maximum height changed from 1.5 m to as low as possible above ground, considering vehicle shape, structure, design or operational conditions. Additional requirements added to permit two supplementary DILs at front and/or rear. Automatic activation speed for manoeuvring lamps revised to 15 km/h from 10 km/h to prevent unexpected activation during work operations.

Presentation on baseline amendments to UN R53 series 05. Main improvements include simplifying definitions in para. 2 by deleting common definitions to UN R48 (reducing from 49 to 27 definitions), adding a summary table of lamp positioning and geometric visibility angles aligned with UN R48, amending the communication sheet with comments from the previous GRE session, amending reference paragraphs 5.15. and 5.16. for readability, aligning further text with UN R48, moving the reference number field for UN R48 series of amendment under para. 10., retaining only the latest transitional provisions in the baseline document with previous ones moved to a reference document, simplifying para. 6.×.4. and 6.×.5. aligned with UN R48, and providing editable pictures.

Proposal to simplify definitions in para. 2, consolidate general specifications in para. 5 and individual specifications in para. 6, revise failure provisions and EV inclusion criteria, clarify wording where no front position lamp exists, and correct references in regulation 53-04. Changes include updating terminology for consistency with UN R48 baseline document (type-approved, retro-reflector, power-driven, direction-indicator lamp with hyphens), replacing visual failure tell-tale with tell-tale indicating failure, using RECAS instead of rear-end collision alert signal, standardizing vehicle category designations, applying scientific notation aligned with prior amendments, consolidating communication forms, reducing transitional provisions to latest only, and modifying paragraph 6.×.4 and 6.×.5 simplifications.

GRE-IWG SLR presents baseline amendments to UN R74 series 04. The document highlights main improvements including simplification of definitions in para. 2 by deleting common definitions shared with UN R48, deletion of six definitions resulting in six remaining, terminology and format alignment with UN R48 and UN R53, addition of a summary table of lamp positioning and geometric visibility angles, amendments to align with other installation regulations including failure provisions and electric vehicle inclusion, simplification of para. 6.×.4. and 6.×.5., retention of only the latest transitional provisions with previous ones moved to a reference document, and provision of editable pictures.

Proposal to simplify definitions by referring to UN Regulation No. 48 definitions, replace terminology (e.g., ‘vehicle type (moped)’ with ‘type of vehicles of category L1’), standardise hyphenation of terms (‘type-approved’, ‘type-approval’, ‘direction-indicator lamp’, ‘light-emitting surface’), delete references to ‘above’ in cross-references, add space for clarifying UN Regulation No. 48 series, delete ‘to this Regulation’ after Annex references, use scientific notation for lumens, add electric vehicle inclusion provisions, correct signal lamp category errors, add Annexes 6 and 7 (summary tables of lamp positioning and geometric visibility angles), insert para. 5.22, and include transitional provisions applicable from the official date of entry into force of the 04 series of amendments, with continued acceptance of preceding series approvals until 1 September [20xx].

Proposal to align para. 6.5. with EU requirements including clarification on the number of additional lamps, review editing for the height of the SMV marking plate, specify the position of the SMV marking plate, set automatic activation of manoeuvring lamps at 15 km/h instead of 10 km/h, replace para. references ‘above/below’ with relevant references, assign numbers to tables and figures, apply hyphenation consistently for beam types and lamp terms, use ‘UN Regulation’ syntax appropriately, replace footnote references to R.E.3 with new para. under para. 2, check conformity of production procedures against the Agreement Schedule 1 (E/ECE/324-E/ECE/TRANS/505/Rev.3), align category vehicle terminology, and correct usage of colour/center to British English.