Proposal to amend UN R86 on approval markings and testing requirements:

• Delete provisions regarding the Unique Identifier and conditional use of conventional type approval markings from the Introduction
• Amend para. 3.3.1.1. to delete reference to the Unique Identifier
• Amend para. 3.3.1.3. regarding approval marking proportions
• Add new para. 3.3.2.5. requiring a vertical downward arrow for devices with reduced light distribution
• Delete para. 3.3.3. on Unique Identifier entirely
• Renumber para. 3.3.4. as 3.3.3.
• Renumber para. 3.3.5. as 3.3.4. and amend to delete reference to Unique Identifier
• Renumber para. 3.3.6. as 3.3.5. and amend to delete reference to Unique Identifier
• Amend para. 5.1. to include Classes IIIA, IIIB and IVA
• Amend para. 5.1.3.1. regarding heat resistance testing and divide samples into groups for testing Class IA, Class IB, Class IIIA and Class IIIB
• Add new para. 5.1.3.1.2. for Class IVA testing
• Amend para. 5.1.7. to create separate Tables 4 and 5 for chronological order of tests for Classes IA, IB, IIIA, IIIB and Class IVA respectively
• Amend para. 5.2.3.3. to reference Part 1 of Annex 6 and paragraphs 5.2.5. and 5.2.6.
• Amend para. 5.2.5.1.1. regarding coefficient of retro-reflection measurement
• Delete para. 5.2.5.2.1. entirely
• Amend para. 5.2.6.3. to include colour requirements and insert Table 8
• Amend para. 5.2.6.4. regarding luminance factor
• Renumber Tables 8, 9 and 10 as Tables 9, 10 and 11
• Amend para. 5.3.5.2.2. to reference Table 11
• Amend Annex 1 Item 5. and delete reference to Unique Identifier in Item 10
• Amend Annex 5 para. 8.1.4. to correct cross-reference to para. 5.3.4.2.1.
• Amend Annex 6 Part 2 para. 1.3.2. to reference para. 5.2.5.1.
• Amend Annex 6 Part 2 para. 2.1.3. to correct paragraph references
• Amend Annex 6 Part 4 para. 4.2. to reference Table 6 only
• Insert new Part 7 in Annex 6 on colour-fastness for Classes IA, IB, IIIA, IIIB and IVA
• Amend Figure A10-I to clarify marking arrangement rules and delete the diametrically opposite requirement

Proposal to amend para. 3.5.3.1. to delete reference to colour verification of retro-reflecting optical units, amend para. 5.1.2. to reduce required samples from ten to eight, amend para. 5.1.3.1. to reduce samples from ten to eight and divide remaining six samples into three groups of two, insert para. 5.1.3.1.1. specifying Classes IA, IB, IIIA and IIIB, amend para. 5.1.7. to delete sample columns i and j from Tables 4 and 5 and delete the weathering resistance test row, and amend reference to Part 4 of Annex 6 to Part 5 of Annex 6 in both tables.

Amend para. 5.1.2. to change the number of samples from ten to eight, modify para. 5.1.3.1. to reduce samples from ten to eight and divide the other six samples into three groups instead of four by deleting the fourth group colour-fastness test requirement, add para. 5.1.7. specifying the chronological order of tests in tables for Classes IA, IB, IIIA, IIIB and Class IVA, and amend para. 3.5.3.1. to add provisions for verification of stability in time of optical properties and colour of retro-reflecting optical units of advance warning triangles in use and withdrawal of approval for systematic deficiencies.

Proposal to amend paragraph 5.2.3.3 to clarify that samples shall be subjected to the heat resistance test described in Part 1 of Annex 6, prior to the tests described in Parts 1 and 2 of Annex 6 paragraphs 5.2.5 and 5.2.6. Proposal to amend paragraph 5.1.7 to correct the reference in Tables 4 and 5 from Part 4 to Part 5 of Annex 6 for the Rear face test. Proposal to amend Annex 5, paragraph 8.1.4 to correct the cross-reference from paragraph 5.9.4.2.1 to paragraph 5.3.4.2.1.

The agenda includes corrections to UN R150-01, baseline documents for UN R53, R74, R86, and R48, simplification of paragraphs 6.×.4 and 6.×.5, transitional provisions, harmonisation of requirements, apparent surface considerations, and direction indicator visibility improvements. The next meetings are scheduled for June and December 2026, with a potential September 2026 session in Tokyo.

SLR-76 session documents are available on the SLR website. Actions include: correcting errors in UN R150 for submission to GRE-94; preparing Stage 2/Step 2 baseline documents for UN R48, R53, R74, and R86; finalizing simplification of paragraphs 6.×.4 and 6.×.5; discussing apparent surface methodology; approving technological neutrality amendments to UN R48 and R149; collecting literature on rear direction indicator visibility; and reviewing harmonization requirements. SLR-77 meeting scheduled April 15-17, 2026 in Brussels.

Proposal to correct errors and omissions in the 01 series of amendments. Further details can be found in informal document GRE-94-02.

Proposal to amend UN R150-01 addressing three main issues. First, since the GRE-adopted proposal to delete the unique identifier (GRE-92-18) was not part of the March 2026 WP.29 submission, the regulation text requires amendment in the interim, though this may become unnecessary if merged with GRE-92-18. Second, the approval marking approach is aligned with UN R148 by including one example in the body text and referencing other arrangements in Annex 10, allowing deletion of the Table 1 reference and redundant ratio explanations from Figure A10-I. Third, the outdated requirement for function symbols to be placed diametrically opposite the approval number — inherited from UN R3 and R7 but already removed in UN R148 — is deleted from Annex 10, along with a clarifying amendment to the note below Figure A10-I to prevent inconsistent interpretations among technical services. Further details can be found in informal document GRE-94-11.