UN R53 series ⁰⁵ baseline amendments simplify the definition in paragraph 2 by deleting common definitions to UN R48, reducing from 49 original definitions to 27. Amendments align failure provision and EV inclusion with UN R48. The communication sheet is amended to align with UN R48. Terminology and format alignment with UN R48 and UN R74 is applied. Previous technical prescriptions are moved to a reference document, keeping only the latest. Paragraphs 6.×.4 and 6.×.5 are simplified, aligning with UN R48. An open point questions whether Annex 1 Communication form should refer to a specific Series of Amendments to R48 definitions.

This amendment modifies definitions in paragraph 2, consolidates general specifications in paragraphs 5 and 6, simplifies failure provisions, includes electric vehicles, aligns terminology with UN R48 baseline and standardizes vehicle category references to “vehicles of category(ies),” corrects AFS provision references, applies scientific notation with lumens, aligns approval number text with UN R48, corrects signal lamp category numbering, uses category symbols instead

Proposal to amend multiple paragraphs in UN R53. Changes include: paragraph 5.3. to add tolerance specifications and manufacturer fitting requirements; paragraphs 5.6.2.1., 5.6.2.2., and 5.6.2.3. to reference UN Regulation No. 48; paragraph 5.8.1. to clarify direction indicator lamp photometric characteristics; paragraph 5.19.2. regarding dual lamp assemblies marked “D”; paragraph 6.1.7.2. for HIAS failure tell-tale specifications; paragraphs 6.2.4., 6.3.3.1., 6.10.4., and 6.11.4. to define geometric visibility angles; paragraph 6.9.3. for circuit-closed tell-tale requirements; Annex 1 paragraphs 9 to 10

Proposal to correct mistakes found in the current 04 series of amendments and align with UN R48, with appropriate adaptation of L category vehicles.

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.

Based on SLR-76-03-Rev1 for R48 and tentatively applying WP.29/2024/76, IMMA presents transitional provisions for UN R53. The document outlines provisions applicable to all amendment series, including that Contracting Parties may grant type-approvals according to any preceding series and shall continue granting extensions of existing approvals. For the 05 series of amendments, specific dates establish when Contracting Parties shall accept or refuse type-approvals, with exceptions for equipment, parts, and unaffected vehicle systems.

Draft amendments to UN R53 (based on SLR-71-07, SLR-71-7, SLR-66-01, SLR-73-07, SLR-75-05, and WP.29/2024/30) updates the baseline document for the 05 series of amendments. Key changes include: simplification of definitions and general specifications; consolidation of individual specifications; addition of EV inclusion and failure provisions; editorial harmonization with UN R48 baseline regarding hyphenation, terminology, and formatting; replacement of “visual failure tell-tale” with “tell-tale indicating failure” and “rear-end collision alert signal” with RECAS; standardization of vehicle category references; adoption of scientific notation with lumens; simplification of paragraphs 6.4 and 6; and revision of the transitional provisions.

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 introduce provisions for adaptive front lighting systems (AFS) for motorcycles.

Proposal to introduce provisions for adaptive front lighting systems (AFS) for motorcycles.

Proposal of an informal document superseding the formal document GRE/2023/17 to correct numbering.

Proposal to enable the phasing out of the installation of older lamps and devices pursuant to the simplification of lighting regulations (UN R148, 149, and 150).

Proposals to introduce provisions for adaptive front lighting systems (AFS) for motorcycles.

Proposal to enable the phasing out of the installation of older lamps and devices pursuant to the simplification of lighting regulations under GRE.

Draft text to enable the phasing out of older lamps and devices.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal including transitional provisions and justifications.

Proposal to limit headlamp classes in UN R53 and to ensure compatibility with the electric propulsion systems.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal from GRE to add references to the headlamp classes under the program for the Simplification of Lighting Regulations.

Proposal from GRE to add references to the headlamp classes under the program for the Simplification of Lighting Regulations.

Proposal from GRE to add references to the headlamp classes under the program for the Simplification of Lighting Regulations and to allow the installation of Adaptive Driving Beams (ADB) on vehicles of category L₃.

Proposal to improve road safety for motorcycles by deleting of Class A and Class BS headlamps.

Proposal to clarify the electrical connection requirements for a white front position lamp reciprocally incorporated with the front direction indicator.

Proposal to clarify the electrical connection requirements for a white front position lamp reciprocally incorporated with the front direction indicator.

Proposal to clarify the electrical connection requirements for a white front position lamp reciprocally incorporated with the front direction indicator.

Proposal aims to enhance the conspicuity of motorcycles equipped with a front position lamp reciprocally incorporated with a direction indicator, by clarifying the electrical connection requirements

Proposal also covers a Supplement to the 02 and 03 series of amendments . Proposal to delete Class A from the R 53. With the same intention Germany propose and to delete Class BS for motorcycles in Supplement to the 01 series of amendments

Proposes to clarify the electrical connection requirements for a white front position lamp reciprocally incorporated with the front direction indicator.

Proposal by IWG SLR introduces new headlamp classes

Proposal by IWG SLR to introduce new headlamp classes

Prepared by IWG SLR with the aim to introduce references to the headlamp Classes in the 01 series of amendments to UN Regulation No. 149.

Proposal to correct cross references to definitions as modified by Supplement 2 to the 02 series of amendments.

Proposal to correct cross references to definitions as modified by Supplement 2 to the 02 series of amendments.

Proposal from the SLR informal group to introduce into the 01 series of amendments to UN R53 references to the headlamp Classes in the 01 series of amendments to UN R149.

Proposal from the SLR informal group to introduce into the 02 and 03 series of amendments to UN R53 references to the headlamp Classes in the 01 series of amendments to UN R149.

Submission for the October GRE session listing the Stage One and Stage Two amendments under development.

Proposal aim to allow the installation of Adaptive Driving Beams (ADB) on vehicles of category L₃.

Proposal to correct cross references to definitions as modified by Supplement 2 to the 02 series of amendments.

In the leaning condition, the operation of the ADB lamp and its effect do not change from the non-leaning condition which turns off the segment where a camera has detected preceding and/or oncoming vehicle(s).Therefore, there is no additional requirement for the leaning condition.

Comments particularly with regard to the transitional provisions for the 03 series of amendments.

Proposal to rectify the transitional period for recently amended provisions applicable to the installation of lighting and light-signalling devices for L3 vehicles.

Comparison of adaptive driving beam provisions between the current UN Regulation No. 48 and the proposal for amendments to UN Regulation No. 53 (GRE-82-13).

Proposal to remove restrictions on the installation of lighting devices on L₁ and L₃ category vehicles that are permitted for M, N, and T category vehicles.

Proposal to clarify the content of GRE/2019/23, aimed at ensuring that the new 03 series of amendments to UN Regulation No. 53 contains the latest proposals adopted by GRE regarding preceding series.

Proposal to enable the approval of Category L₃ equipped with adaptive driving beam (ADB) headlamps under UN R53 and R149.

Proposal to align UN R50 and UN R53 regarding the inward geometric visibility requirements for rear position lamps, to allow the use of different stop lamp activation methods for powered two-wheelers as currently applicable for four-wheelers; e.g. by the application of a retarder or a similar device, and to make editorial corrections.

Proposal to introduce requirements for automatic switching from DRL to headlamp(s) if the maximum luminous intensity of DRL is above 700 cd and to restore the original automatic headlamp ON (AHO) requirement for vehicles not equipped with daytime running lamps (DRL) modified by the 03 series.

Proposal to

• align UN R50 and UN R53 regarding the inward geometric visibility requirements for rear position lamps;
• to allow the use of different stop lamp activation methods for powered two-wheelers as currently applicable for four-wheelers; e.g. by the application of a retarder or a similar device.
• restore the definition of “device” (because the definition under UN R53 differs from that under UN R48)
• delete the definitions of “bend lighting”, “H plane”, “sequential activation” and “emergency stop signal” (because they are identical to the definitions in UN R48), and
• introduce requirements for light emitting diode (LED) substitute light sources.

Proposal to render optional the fitment of front position lamps where the motorcycle is fitted with automatic headlamp switching or daytime running lamps meeting certain conditions and to add provisions regarding electrical connections and the activation of simultaneous lamps (e.g., to permit activation of rear lamps before the front lamps are activated).

Proposal to align the 03 series of amendments to UN R53 (as adopted during GRE-81: GRE/2018/50, as amended by GRE/2019/12) with the latest proposals for amendments to the 01 and 02 series (as adopted by GRE but not yet in force at the time of the present proposal:

1. Add references to UN R148, R149, and R150 (WP.29/2018/104/Rev.1 as amended by WP.29-177-07, and WP.29/2018/105), implementing the change index and amending the definitions (taking into consideration informal document GRE-80-05),
2. Align UN R53 with UN R148 regarding the inward geometric visibility requirements for rear position lamps (GRE/2018/28),
3. Clarify the use of direction indicators to show the status of the device for protection of a vehicle against unauthorised use and allow exterior courtesy lamps to be fitted on motorcycles (WP.29/2019/17 as amended by para. 107 of the session report and WP.29/2019/18 as amended by para. 108),
4. Align UN R53 with UN R48 and correct a mistake in a previous amendment process (WP.29/2018/86/Rev.1 andWP.29/2018/87/Rev.1),
5. Allow the use of different stop lamp activation methods, aligning the definition of “stop lamp” with UN R48 (GRE/2018/29), and
6. Introduce requirements for light emitting diode (LED) substitute light sources (GRE/2018/41).