Proposal to amend Annex 3, paragraph 1.1.1. to delete the sub-paragraph referring to bedding of brake linings according to manufacturer’s instructions. A defined bedding procedure of brake linings was introduced in paragraph 1.1.2. of Annex 3 with Supplement 9 to the 01 series of amendments to UN Regulation No. 90. The last sub-paragraph of paragraph 1.1.1 had not been deleted in Revision 2 and 3 of UN Regulation No. 90, leading to different interpretations of the bedding procedure, which this proposal resolves.

Proposal to amend para. 5.1.6.3.4. to specify that the intervention shall generate the signal to activate hazard warning lights and to clarify that for verification of timing requirements applicable to Risk Mitigation Functions, the signal to activate hazard warning lights is deemed to start the intervention, and amend Annex 8, para. 3.6.1.(b) to specify that the signal to activate hazard warning lights is generated at the earliest five seconds after the warning signal specified in para. 5.1.6.3.2. has been generated.

Proposal to improve the repeatability of tests and verifications, including:

• Insert a new para. 5.1.12. requiring that manufacturers provide information on the method by which the initiation signal of any system intervention required by the Regulation can be objectively identified and retrieved, including specific flags, status bits, or event codes on in-vehicle networks, and that manufacturers provide clear instructions and all necessary tools for the technical service to extract and interpret the signal, with the procedure for identifying the initiation of the system intervention and corresponding data appended to the test report.

Proposal to amend para. 3.5.1. in Annex 3 to require the manufacturer to demonstrate to the Type Approval Authority at least every three years that the safety management system continues to comply with requirements for software and hardware employed in the system to manage safety and continued compliance throughout the product lifecycle. This amendment resolves outstanding issues in the 01 series of amendments to UN Regulation No. 171.

Proposal to insert new Part C providing guidance for the application of UN R155 to transformed vehicles. Part C addresses identification of cyber-relevant transformations, impact on original vehicle architecture, connection risks, and impact on cyber security management systems. It specifies that transformations require new approval unless the manufacturer provides clear evidence that the original approval remains valid, and outlines critical factors and examples of cyber-relevant actions. It details documentary evidence expected from manufacturers regarding functional descriptions, connections with original vehicle types, added components and functions, and arguments demonstrating negligible intrinsic risk.

Proposal to insert para. 3.2.2. requiring manufacturers of Automated Lane Keeping Systems active in multiple Contracting Party territories to provide information on traffic rules identification, territory-specific testing, and contact details, insert paras. 4.8. to 4.8.6. establishing procedures for granting approval authorities to inform and consult receiving approval authorities at least 30 days before approval, allow receiving authorities 30 days to comment on regulation interpretation, require dispute resolution under Article 10 and Schedule 6 of the 1958 Agreement, and insert footnote [Y] stating these provisions shall be kept under periodic review by GRVA for amendment as necessary.

Proposal to amend para. 2.8 of Annex 8 to add a new requirement that braking forces from combined service and parking braking systems shall hold a laden trailer as required in Annex 4 para. 3.2.1 at any time when service brake energy reservoir pressure reduces from 850 kPa to 0 kPa, ensuring continuous trailer immobilisation during service brake pressure depletion while establishing a performance-based requirement rather than prescribing specific technical solutions.

Proposal to amend Annex 8, para. 3.4.1. to require that the strategy chosen shall not prejudice safe operation of the system due to failures with other systems involved in achieving the function of the system, and amend Annex 8, para. 3.4.4. to require that analysis of system behaviour on fault occurrence includes faults with other systems involved in achieving the function of the system, and to correct ‘safetys’ to ‘safety’. The proposal addresses a collision where tyre failure resulted in unsafe ABS activation. Although the 02 series clarified ABS as part of electronic control systems assessment, it does not explicitly state what is covered, potentially missing relevant faults or failures influencing system function. The additions ensure all relevant faults or failures are accounted for in manufacturers’ safety concept and analysis.

Proposal to insert provisions on Software Identification Numbers and software updates across UN R13, R13-H, R79, R89, R130, R131, R152, R155, R156, R157, R171, R175, and R178 by adding definitions referencing Consolidated Resolution R.E.3 Annex 7 paragraph 2, requiring manufacturers to provide Technical Services with information on hardware and software influencing performance with test reports, permitting vehicle manufacturers to apply for new approvals differentiating software versions for registered vehicles from new vehicles where type approval regulations are updated or hardware changes occur in series production with test duplication avoided where possible, clarifying that production is not considered definitively discontinued if manufacturers obtain subsequent extensions for software updates of registered vehicles, renumbering and inserting new items in approval communication annexes for R13SWIN, R13-HSWIN, R79SWIN, R89SWIN, R130SWIN, R131SWIN, R152SWIN, R155SWIN, R157SWIN, R171SWIN, R175SWIN, and R178SWIN information including whether held on vehicle and relevant parameter identification lists, and amending R157 and R171 to align software update requirements with R156 technical specifications and transitional provisions.

The document provides the running order and tentative timetable for the twenty-sixth GRVA session based on ECE/TRANS/WP.29/GRVA/2026/23. Sessions are scheduled for 14–18 September 2026 in Room VII, with agenda items including adoption of the agenda, highlights from the June 2026 WP.29 session, election of officers, connected vehicles, cyber security, software updates, data protection, automated and autonomous vehicles, artificial intelligence, advanced driver assistance systems, braking regulations, and other business matters.

Document presents automated shuttles as vehicles designed for public transport with autonomy by design, typically featuring fewer than 10 seats and often limited to 50 km/h maximum speed. Shuttles are deployed globally but are incompatible with current UN vehicle categories: category M₁ does not accommodate standing passengers and is incompatible with crashworthiness regulations, while M₂/M₃ Class A construction alignment is prevented by the fewer-than-10-seat threshold. Proposal calls for a workshop organized by the GRSG/GRVA task force on automated vehicle categories to engage stakeholders and confirm need for an international category or class, addressing administrative questions, alignment with M₂/M₃ regulations, seating capacity, dimensions, weight, speed limits, and bidirectionality options.

Note by the secretariat summarizing outcomes from the June 2026 sessions of WP.29 Administrative Committees. AC.1 adopted amendments to UN Regulations including a new UN Regulation on ADS and 92 ADS fitness amendments, plus 02 series amendments to UN R171. AC.3 established a new UN GTR on ADS and agreed to continue ADS follow-up work. AC.2 welcomed a new WP.29 Secretary, authorized SAE China participation, and provisionally invited IADS to attend GRVA sessions.

This document has been provided to GRVA as a courtesy by ISO. Please refer to GRVA for the password to open the document (https://unece.org/info/events/event/412104).

Proposal to amend, delete, and insert various provisions throughout a Guidance and Interpretation document on GTR 26 and UN R185 on Automated Driving Systems. The document supplements the proposal to supersede GRVA/2026/24 by providing the changes to the draft text separately from the restructuring and additions of GTR 26 references.

The IWG on AI reports on three meetings held since June 2026 and future meetings scheduled through January 2027. The IWG has compiled literature on regulated automotive safety systems using AI, created terms and definitions for AI, listed AI use cases for regulated automotive safety systems, and is working on an AI reference document (latest draft AI-11-03). An AI reference document is scheduled for submission as a formal working document to the June 2027 WP.29 session, based on WP.29-199-26 with structural and conceptual improvements. Small drafting groups will propose document updates via change request forms using AI-11-04, with only updates receiving majority consensus during plenary meetings incorporated into the baseline.

Status report on research activities of the Informal Working Group on ACPE GTR. Canada is conducting ongoing tests with three vehicles examining accelerator application rates, distances to obstacles, and false-positive interventions. The United Kingdom plans to contribute information from Transport London research. South Korea is preparing presentations on documented cases with 10Hz EDR data and KNCAP 2026 tests. Germany is planning vehicle benchmarks and subjective tests. Japan is conducting vehicle evaluation tests using two passenger vehicles with three target types based on UN R175 01 series test procedures. The next coordination meeting is scheduled for 10 November 2026, with an in-person meeting in Tokyo proposed for February 24–26, 2027.

Progress report on Authentication and Authorisation (OBAC) work. Since the 25th GRVA session, a brief update was provided to the 199th WP.29 session in June, input was gathered from contracting parties regarding scope, needs and directions, use cases were set for initial focus including DSSAD, OBFCM, Digital Key and ePTI, and rationale was refined. A Support Paper is now being drafted for introduction through WP.29.

Provisional agenda for the twenty-sixth session of the Working Party on Automated/Autonomous and Connected Vehicles (GRVA), held 14 September 2026 in Geneva. Items include adoption of agenda, highlights from June 2026 WP.29 session, Artificial Intelligence in vehicles, automated and connected vehicles including Automated Driving Systems, UN Regulations 155, 156, 157, 171, 178, 151, 152, 130, 131, 139, 140, 13, 13-H, 78, 90, Advanced Driver Assistance Systems, braking systems, Electronic Stability Control, e-Trailers, motorcycle braking, exchange of views on guidelines and national activities, Revision 3 to the 1958 Agreement, election of officers, and other business including climate change mitigation strategy and programme of work.

Proposal to insert definitions for Software Identification Number, insert requirements for manufacturers to provide necessary information allowing the Technical Service to uniquely identify hardware and software configurations, insert provisions allowing vehicle manufacturers to apply for new approvals to differentiate software versions for registered versus new vehicles, amend production discontinuation provisions to clarify that cessation is not deemed definitive if the manufacturer intends to obtain subsequent extensions for software updates of vehicles already registered in the market, renumber and insert new items in approval communication annexes regarding software identification and software updates including RxSWIN, and insert provisions allowing vehicle manufacturers to obtain new approvals for software version differentiation across multiple UN Regulations (13, 13-H, 79, 89, 130, 131, 139, 140, 152, 155, 156, 157, 171, 175, and 178).

Proposal to amend paragraph AI to introduce a link between existing text in Part A and new Part C regarding vehicle transformations, insert new Part C providing guidance for the application of UN Regulation No. 155 to transformed vehicles including documentary evidence requirements, and add section 6 clarifying that the requirement for Certificate of Compliance and type approval to be issued by the same Approval Authority applies only within the scope of a specific type approval and its approval holder.

The IWG on AEBS held its second meeting virtually on 18 June 2026 and decided to submit ECE/TRANS/WP.29/GRVA/2026/38 for approval, an amendment adding a footnote to clarify that Sufficient nominal Peak Braking Coefficient should be understood as a minimum value. The IWG plans to collect accident data from jurisdictions, existing regulations, technologies, and state-of-the-art performance requirements for collision scenarios involving pedestrians at night. A schedule of future informal meetings is provided through January 2028, with a draft regulation planned for availability by January 2028 and formal submission by September 2028.

Report on a virtual meeting of the Task Force on Vehicular Communications held on 11 June 2026. Presentations were made by China CAICT with support from CATARC, the European Commission DG MOVE, and SAE International on the use of communications to improve the protection of VRUs. The co-chairs are UK, U.S., and Japan, with China as vice-chair.

Status report on the ADS Workshop since the 25th GRVA, covering two meetings held in June and July 2026. Task 3 addressed interpretation and guidelines, with nearly 60 change requests discussed and concluded during the Brussels meeting. Four types of changes were needed to GRVA/2026/24: consolidation of approved changes, addition of GTR version references, revised number formatting, and editorial improvements. Two informal documents are provided for clarity: a clean revision (GRVA-26-09e) and a listing of substantive changes (GRVA-26-09a1e). The workshop seeks GRVA approval for submission to WP.29 in November 2026 for adoption in March 2027. The revision applies alphabetical headings aligned with ADS regulations structure, alphanumeric subheadings for explanations, and deletes consecutive numbering to avoid confusion with GTR and UN R185 paragraph numbers.

Proposal to:

• Insert new para. 3.2.2. requiring manufacturers of ALKS active in territories other than the approving Contracting Party to provide summaries of how applicable traffic rules were identified, interpreted, and assessed, summaries of specific testing carried out, and a single point of contact,
• Insert new paras. 4.8. to 4.8.6. establishing procedures for granting approval authorities to inform receiving approval authorities of such ALKS, requiring information sharing at least 30 days prior to approval, permitting receiving authorities to comment within 30 days, establishing dispute settlement under Article 10 and Schedule 6 of the 1958 Agreement, and requiring the same procedures when extending type approval to additional territories,
• Insert footnotes [Y] and [X] regarding periodic review and contact details for approval authorities.

Document presents parking accident data from China showing high-frequency accident factors including static obstacles and vulnerable road users, with 45% of parking lot accidents occurring on driveways and 40% involving children. Establishes recommendations for a Parking Task Force to research product requirements for Assisted Parking and Automated Parking, evaluate applicability of current UN regulations, and promote formulation or revision of regulations. Identifies technical differences between driving and parking functions, including separate development routes, earlier mass production timelines for parking automation, and specific test method requirements not fully covered by current UN regulations.