The document provides follow-up information from the SLR 77th session. SLR-77-06/Rev.1 corrects errors and omissions in Reg. 150 and will supersede GRE-94-02, potentially merged with the proposal deleting UI in R150-01 for WP.29 submission in November 2026. Four baseline documents for Stage 2/Step 2 work (SLR-77-08/Rev.1, SLR-77-09, SLR-77-10, SLR-77-07 for Regs. 48, 53, 74, 86 respectively) will be submitted to GRE-94 with presentation slides. SLR agreed to keep Par. 6.21 on conspicuity marking and to renumber paragraphs 5.5 to 5.36. Old transitional provisions are documented separately. Apparent surface definition will replace light-emitting surface. Direction indicator visibility requires further study. Harmonisation text prohibits non-mentioned lamps unless compliant with national requirements. Eleven informal documents will be submitted to GRE-94.

Proposal to amend, restructure, and clarify UN R86:

• Update the regulation title and scope to reference vehicles of category T, R, S, agricultural and forestry NRMM vehicles regarding installation of lighting and light-signalling devices
• Restructure and reorganize para. 2 (Definitions) by consolidating lamp definitions, deleting outdated definitions, and reorganizing vehicle-related and lamp-related definitions into separate sections
• Revise para. 3 (Application for approval) to clarify submission requirements and add reference to Annex 1 documentation
• Amend para. 4 (Approval) to reference Schedule 4 of the 1958 Agreement and update approval mark procedures in Annex 2
• Restructure para. 5 (General specifications) by reorganizing and renumbering provisions relating to lamp position (para. 5.5.), geometric visibility (para. 5.6.), single lamps (para. 5.9.2.), tell-tale requirements (para. 5.14.), concealable lamps (para. 5.15.), and lamps of variable position (para. 5.17.), and revise provisions regarding electrical connections for front and rear position lamps, driving-beam and passing-beam headlamps, and daytime running lamps
• Restructure and revise para. 6 (Individual specifications) by introducing para. 6.0. as a general introductory provision, renaming driving-beam and passing-beam headlamps throughout, reorganizing direction-indicator lamp arrangements as A, B, C, D, E with detailed geometric visibility specifications in para. 6.5.5., revising stop lamp position and geometric visibility requirements in para. 6.7., restructuring front and rear position lamp requirements, revising rear fog lamp electrical connections, clarifying parking lamp requirements, restructuring rear and front retro-reflector specifications to include separate sections on electrical connections, tell-tale, and other requirements, reorganizing side-marker lamp provisions, clarifying conspicuity marking requirements, revising SMV rear marking plate specifications, restructuring exterior courtesy lamp and manoeuvring lamp requirements, and updating all light colour specifications
• Amend para. 8 (Conformity of production) to include reference to the Agreement Schedule 1 and clarify the conformity requirements
• Clarify para. 10 (Production definitively discontinued) regarding notification requirements
• Revise para. 12 (Transitional provisions) to replace existing series-specific provisions with general transitional provisions applicable to all series of amendments and add new transitional provisions for the 04 series of amendments with dates specified as 1 September 20xx (pending confirmation)
• Update Annex 1 (Communication) to reference the 04 series of amendments in the approval mark examples and add informative tables (TableA4-1 and TableA4-2) in Annex 4 (previously Annex 3) summarizing lighting and light-signalling installation rules for tractors/agricultural and forestry NRMM (vehicles of category T) and vehicles of categories R and S
• Revise Annex 2 (Examples of arrangements of approval marks) to reference the 04 series of amendments and update marking examples
• Delete Annex 3 (The relevant parts of Annex 3 to UN Regulation No. 48 apply) and replace with visibility zones diagrams in new Annex 3
• Reorganize former Annex 5 (Direction-indicator lamps – Geometric visibility) and incorporate into new Annex 4 as summary tables with footnotes explaining special conditions
• Update Annex 5 (Signalling panels and signalling foils) to clarify dimensions, arrangement, number and reflecting surface requirements with references to updated figures and table

This presentation analyzes RD-ASEP model performance using test run data from Annex_9_test_runs where both left and right sound were measured. Current model shows 1.3% of measurements above L_exp; without the 2 dB margin this increases to 8.4%. Model overestimates at low speeds and underestimates at higher accelerations. Tyre rolling sound parameters have most influence on results and dominate most of the data set. Optimizing all 13 parameters reduces mean absolute error from 2.1 to 1.1 dB. More high acceleration measurements are needed to reliably calibrate the dynamic component.

AI-Enabled Road Vehicles Managing a Complex Standards Landscape presents the current landscape of standards and regulations for AI in road vehicles, structured overview of core AI governance, engineering, organisational and data governance standards required for EU AI Act conformity and UNECE compliance, and identifies gaps and challenges in alignment. ISO 8800 (2029) Road vehicles Safety of Artificial Intelligence is proposed as a common framework providing navigation and connection across horizontal AI standards with automotive sector-specific needs, reducing fragmentation and enabling transparent, traceable evidence-based assurance for regulators, industry and society while supporting compliance with EU AI Act and future UNECE requirements.

The agenda includes coordination of work referencing GRPE-92-14, GRPE-93-22/Rev.1, GRSP-78-17, and GRPE-94-06, electrical safety review, cyber security, braking, EMC, power determination and battery range, and draft text for the proposed UN Regulation. Additional meetings are scheduled for 2nd July (Hybrid, Brussels) and 9th September (Online).