This informal document proposes amendments to UN R78 to introduce new requirements for “Complex Electronic Control Systems” aimed at addressing new technologies such as automatically commanded braking.

Input concerning the review of existing UN Regulations and Global Technical Regulations with regard to their application to vehicles equipped with Automated Driving Systems.

Proposal to clarify the need to apply, when relevant, the Type IIA test in Annex 15 for alternative brake lining purposes (e.g., in the case of vehicles with regenerative braking for Type IIA endurance test purposes to use the friction brake as an alternative to the regular endurance brake).

Proposal to delineate the scope of UN R79 vis-à-vis the draft new UN Regulation on Driver Control Assistance Systems (DCAS).

Proposal to clarify the need to apply, when relevant, the Type II test as required by Annex 4 paragraph 1.8.2.5 (b) in Annex 15 for alternative brake lining purposes.

Proposal to clarify the need to apply, when relevant, the Type II test as required by Annex 4 under paragraph 1.8.2.5 (b) in Annex 15 for alternative brake lining purposes.

Proposal to modify the track and real-world testing provisions in Annex 6.

Proposal to ensure that vehicles exhibiting functionality meeting the definition of ACSF-B2 or -E are required to comply with the 01 series of R171 (or later). The 01 series added the necessary technical requirements to ensure the safety of features that allow ‘hands-free’ operation or perform system-initiated manoeuvres.

Proposal to amend UN R155 and UN R156 regarding approval authority requirements:

• Add a refusal ground to para. 5.1.3. of UN R155 where the Certificate of Compliance for the Cyber Security Management System has not been issued by the same approval authority granting type approval
• Insert new para. 5.4. into UN R156 to provide that approval authorities shall not grant any type approval if the Certificate of Compliance for the Software Update Management System has not been issued by the same approval authority granting type approval.

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 amend para. 5.1.3., insert new paras. 5.1.5. and 5.1.5.1. requiring the Approval Authority to refuse type approval unless the Certificate of Compliance for the Cyber Security Management System is issued by the same Approval Authority granting vehicle type approval, while permitting referencing of certificates from other Approval Authorities under specific conditions with documented agreements and clarified responsibilities, and insert new paras. 5.4. and 5.4.1. with equivalent requirements for the Software Update Management System Certificate of Compliance.

Proposal to introduce new requirements for Complex Electronic Control Systems, in line with the corresponding provisions for passenger cars in UN Regulation No. 13-H

Proposal to align the text with the guidelines on UN regulatory procedures and transitional provisions in UN Regulations (document ECE/TRANS/WP.29/1044/Rev.3). Under the guidelines, a UN Regulation (in this case, UN R157) making reference to the provisions of another UN Regulation (in this case, UN R10) shall not require actual approval to that UN regulation but simply refer to the provisions of that UN Regulation.

This document summarises the reviews conducted by the GR working parties on the fitness for ADS of UN Regulations and GTR for application to ADS vehicles. This document represents the current opinions of the experts at the time of submission, and the recommendations contained inside may evolve significantly during the next steps of the process of reviewing and amending Regulations.

Proposal to clarify the application of UN R10 on electromagnetic compatibility requirements to ALKS.

Proposal to differentiate between the scope of UN R79 and the proposed UN Regulation on Driver Control Assistance Systems (DCAS).

Pursuant to changing the application of the Unique Identifier (UI) under the 1958 Agreement, this proposal deletes the prohibition on use of the UI for replacement brake components under UN R90. Originally, the UI was applied by default to all UN Regulations which therefore required certain regulations to prohibit its use. Pursuant to the adopted proposal WP.29/2025/17, each regulation grants permission to use the UI so the provision prohibiting use under UN R90 is no longer needed.

Proposal to amend UN R155 by inserting new para. 5.1.3.(e) establishing that the Certificate of Compliance for the Cyber Security Management System shall not be issued by a different Approval Authority than the one granting type approval, and amend UN R156 by inserting new para. 5.4. establishing that Approval Authorities shall not grant type approval if the Certificate of Compliance for the Software Update Management System has not been issued by the same Approval Authority granting type approval. Justification includes ensuring holistic cybersecurity assessment, clarifying reporting obligations under para. 7.2.2.2.(g), addressing unharmonized mutual recognition of management system certificates, maintaining consistency between regulations, and upholding the fundamental principle that approval authorities retain responsibility for all aspects of type approval.

Netherlands proposal intended to enhance head restraint effectiveness for taller people.

Discussion of R.E.3. revision 8 adopted by WP.29 in November 2025, which allows vehicle manufacturers to apply for new approvals for software versions on registered vehicles. The Netherlands raised concerns about compatibility with type approval principles, the 1958 Agreement, and EU law, citing issues with traceability, multiple approvals for one type, approval requirements for non-production vehicles, and product marking. The document proposes distinguishing between ‘live’ approvals for new vehicles using normal type approval procedures and ‘legacy’ approvals for in-service vehicles using an updated revision concept, with updates to Schedule 3 of the 1958 Agreement and R.E.3. revision 9.

Paper submitted to the UN Working Party on the Transport of Dangerous Goods to open discussions on the use of gaseous fuels in ADR vehicles.

Draft text of amendments to UN R110 to introduce provisions for liquefied natural gas systems pursuant to the 15th LNG Task Force session.