The Czech Republic requests guidance from GRSG on whether automatic activation of a dedicated “Call for Help” signal with higher flashing frequency, instead of the standard hazard warning signal following severe vehicle impact linked to UN Regulation No. 144 trigger criteria, conflicts with existing post-crash safety requirements under GRSG competence. A formal proposal to introduce this new signal within UN Regulation No. 48 has been submitted to GRE under document ECE/TRANS/WP.29/GRE/2026/2.

Draft amendments concerning lamps under parked conditions presented in a consolidated revision of UN R48.

Terms of reference and rules of procedure for the Task Force on Lamps Under Parked Conditions (TF-LUPC). TF-LUPC shall review the requirements of the current suite of lamps under parked conditions and develop proposals within the framework of UN R48 pertaining to Energy Indicator and Lamp test mode. The task force is open to all GRE participants. Two Co-Chairs (Japan/Netherlands) and a Secretary (OICA) shall manage it. Decisions shall be reached by consensus. STEP 2 aims to present an informal document at GRE’s ninety-fifth session in October 2026 and a formal document at the ninety-sixth session in April 2027 for submission to WP.29 as part of the 10 series of amendments.

The agenda includes adoption of previous session reports, correction of errors in Regulation 150-01, improvement of direction indicator visibility, rearrangement of lamp provisions in Regulation 48, consistency checks for geometric visibility angles, baseline documents for Regulations 48, 53, 74, and 86, review of transitional provisions, discussion of apparent surface definitions, and submission preparation for GRE-95.

This document is a baseline for UN Regulation 48 (Stage 2/Step 2) concerning vehicle lighting and light-signalling devices. It incorporates all amendments from multiple series and includes provisions for adaptive front-lighting systems (AFS), driver assistance projections, reversing projections, direction-indicator projections, and automated driving system (ADS) features. The regulation establishes requirements for the design, installation, and operation of lighting devices on vehicles of categories M, N, and O, with comprehensive specifications for individual lamp types, geometric visibility angles, electrical connections, and tell-tale requirements. It includes transitional provisions allowing approvals under preceding series while establishing phased implementation timelines for new requirements.

SLR will deliver Stage 2/Step 2 to GRE-96 by end of January 2027 for submission to WP.29 in November 2027. SLR’s mandate ends December 2027. A new informal working group on Supporting technical experts on Lighting Regulation (SteLR) will be established, chaired by EC and vice-chaired by Germany, to address remaining open points from SLR and TF-GP. Main topics include visibility of signalling functions, glare prevention, apparent surface, energy saving, replaceability and sustainability, and V2X communication.

The Task Force on Lamps Under Parked Conditions will hold its 12th session as a hybrid meeting in Tokyo on 11 September 2026. The agenda includes discussion of Terms of Reference to modify the timeline, continuation of questionnaire discussion, and proposal for modification of UN R48 regarding lamp test modes and Energy Indicators for M₁ and N₁ vehicle categories. The session will also address follow-up and action items, review of existing Regulations and Standards, any other business, and confirmation of the next meeting.

The 78th session of the GRE Informal Working Group on Simplification of UN Lighting and Light-Signalling Regulations was held in Brussels, 10-12 June 2026. SLR decided not to include a new Part 7 on Colour-fastness in Annex 6 to Regulation 150-01 and will submit a consolidated correction proposal to GRE-95. Discussion on apparent surface definitions and single lamp distance requirements will resume at SLR-79, with wider consideration of related topics including glare and direction indicator visibility. Baseline documents for Regulations 48, 53, 74, and 86 were reviewed and updated versions will be prepared for the next session. The next SLR meeting will be held in Tokyo on 7-11 September 2026.

This document discusses single lamp distance requirements in context of Apparent Surface simplification pursuant to discussions with Contracting Parties. The current 75mm separation value was not based on studies but on considerations. A 1999 IENGF Milano study concluded that larger distances are acceptable for symmetric constellations, with AFS lighting units spaced up to 200mm. A minimum 600mm separation is mandatory if right and left mounted functional unit identification is required. No evidence of increased accident risk, misidentification of signal, reduced conspicuity, or regulatory enforcement issues from current single lamp separation distances exists. The simplified CAD-based Apparent Surface concept will be based on light emitting surface with clear outer lens disregarded. GTB suspended work on this topic due to insufficient consensus and difficult stakeholder alignment, pending additional information on single lamp separation distance.

OICA proposes:

• Amend the heading of para. 2.11.5. to clarify that additional colours are introduced specifically for energy status indication,
• Add colour requirements in para. 5.15. permitting white, amber, red, selective-yellow, indicator blue, or indicator green for energy status indicators, with indicator blue and indicator green reserved for charging, discharging, or scheduling of energy transfer to or from the rechargeable electrical energy storage system,
• Replace multiple charging connector provisions in para. 6.29.9.1. to specify conditions for energy status indicator activation,
• Add para. 6.29.9.1.1. permitting independent activation of multiple energy status indicators,
• Insert para. 6.29.9.6. requiring vehicle manufacturers to declare intended use of indicator blue and indicator green in the information document,
• Add para. 6.29.9.2. establishing observation area intensity requirements and limiting intensity outside this area to 140 cd,
• Amend Annex 14 to include energy status indicators.

Task Force on Lamps Under Parked Conditions held its 11th session on 8–10 June 2026 in Paris. The agenda and previous report were adopted without changes. Experts reviewed proposals for modifications to UN R48, discussing energy status indicator colour conventions, apparent surface requirements, numbers of indicators for multiple charging connectors, and lamp test modes. Key decisions included restricting indicator illumination to connectors in use, maintaining 1–25 cm² apparent surface for most indicators with 1–150 cm² for connector-surrounding indicators, and performing one mode test per class in neutral state. The next meeting is scheduled for 11 September 2026 in Tokyo, with a final proposal targeted for April 2027 GRE session.

At the 77th SLR meeting (Brussels, April 2026), participants reviewed and improved baseline documents for UN Regulations 48, 53, 74, and 86, reflected in SLR-77-08/Rev.1, SLR-77-09, SLR-77-10, and SLR-77-07 respectively. SLR approved a revised proposal to correct errors in Reg. 150-01 (SLR-77-06/Rev.1, superseding GRE-94-02) and a compromise text prohibiting additional lamps unless complying with national requirements. SLR agreed to postpone official document submission to GRE-96 (April 2027) and will submit 11 informal documents to GRE-94, including status report, four baseline documents, four highlights slides, a proposal on technological neutrality, and the revised correction proposal. Discussions on apparent surface, direction indicator visibility, and direction indicator lamp height will resume at SLR-78 (June 2026).

The 76th SLR session (4–6 February 2026) reviewed and improved baseline documents for Regulations 48, 53, 74, and 86 for Stage 2/Step 2 submission to GRE-94 as informal documents. SLR approved simplification of paragraphs 6.×.4. and 6.×.5. in Reg. 48 and agreed on technological neutrality amendments to Reg. 48 and a compromise text for Reg. 149. SLR approved a compromise text on “Prohibited if not allowed” for final check at SLR-77. Discussions on apparent surface and direction indicator visibility will resume at SLR-77. Transitional Provisions for the 10 series will be reviewed at SLR-77. The 77th, 78th, and 79th meetings are scheduled for April, June, and September 2026.

Annotated provisional agenda for GRE’s ninety-fifth session (20-23 October 2026). The session will address development of UN Global Technical Regulations and Rules; simplification of lighting and light-signalling UN Regulations; amendments to UN Regulations Nos. 48, 53, 74, 86, 148, 149, 150, 10 and 65; activities of informal working groups and task forces on simplification, light sources, electromagnetic compatibility, glare prevention, and autonomous vehicle signalling; International Whole Vehicle Type Approval and electronic database developments; and election of officers for 2027.

The GRE Informal Working Group on Simplification of UN Lighting and Light-Signalling Regulations held its 73rd session in Brussels on 9-11 July 2025. SLR approved reports from the 70th and 71st sessions. The Homework Team R-150 will prepare an updated version of SLR-73-09 including a decision tree and justification for submission to GRE-93 or GRE-94. SLR experts will study the GTB draft proposal in SLR-73-04 (superseded by SLR-73-04/Rev.1) to simplify paragraphs 6.×.4. and 6.×.5. in Reg. 48. SLR-73-07/Rev.1 reflects the latest baseline document for Reg. 48 with agreed modifications. IMMA introduced baseline documents for Reg. 53 and Reg. 74 reflecting simplified definitions. CEMA will prepare a baseline document for Reg. 86. GTB will prepare an updated proposal for a CAD-based method to determine apparent surface for SLR-74. A special SLR session on apparent surface may be held on 10 September 2025 if equipment is available. Discussion continues on harmonisation of requirements, improving direction indicator visibility, and technological neutrality for light sources. The 74th SLR meeting is scheduled for 10-12 September 2025 in Brussels.

The 74th SLR meeting (Brussels, 10–12 September 2025) reviewed baseline documents for Regulations 48, 53, 74, and 86, with participants improving draft texts on simplified paragraph structures and definitions. Key topics included correction of errors in Regulation 150 (formal proposal for GRE-94 April 2026), apparent surface simplification with support for Alternative A and luminance method consideration, improved visibility of daytime running lights (OICA drafting proposal for December session), and harmonisation of requirements regarding prohibited if not allowed (seeking GRE feedback). Technological neutrality for light sources was deferred to informal discussions. The 75th meeting is scheduled for 10–12 December 2025 in Brussels.

The GRE Informal Working Group on Simplification of UN Lighting and Light-Signalling Regulations held its 75th session in Brussels, 10–12 December 2025. SLR reviewed and improved revised baseline documents for Regulations 48, 53, 74, and 86, reflected in SLR-75-10/Rev.1, SLR-75-16/Rev.1, SLR-75-17, and SLR-75-21 respectively. SLR endorsed corrections to Regulation 150-01 in SLR-75-02/Rev.1 and simplified paragraphs 6.×.4. and 6.×.5. in Regulation 48 per SLR-75-05/Rev.1 (superseded by SLR-75-05/Rev.2), with continued discussion at SLR-76. SLR tasked GTB to complete work on apparent surface definition and CAD method. SLR agreed the 76th meeting will be held 4–6 February 2026 in Brussels.

The 8th session of the GRE Task Force on Glare Prevention (9 June 2026, Brussels) approved the previous meeting’s report and received feedback on GRE-94. The Task Force discussed headlamp cleaning requirements, the 2000 lm light output limit, horizontal aiming for passing-beam orientation, and periodic technical inspection compatibility with Regulation No. 48. The GTB Task Force will submit an update at the 9th session targeting ranking of proposed glare-prevention solutions. The Task Force will next address glare from light signalling devices and then work on countermeasures. The 9th meeting is scheduled for Tokyo on 8 September 2026, and the 10th meeting for Brussels in December 2026.

Document describes the current answer-back signal requirement in UN R48-09, which limits maximum luminous intensity to 700 cd on or above the HH line. The regulation practically prohibits use of direction indicators with filament bulb light sources as answer-back signals, despite conventional widespread use without safety issues. Japan proposes excluding direction indicators from the 700 cd limitation to allow conventional answer-back signals using direction indicators with filament light sources, while maintaining other restrictions including the 700 cd limitation for other functions and prohibition of front fog lamps, rear fog lamps and stop lamps as answer-back signals. Revision is needed before UN R48-09 mandate for new vehicles in September 2027.