WP.29/2026/71
UN R173: Proposal for a Supplement 2 to the 01 series of amendments

Proposal to enable application to vehicles of category X. For vehicles of category X, the R point of the most forward passenger seat shall be taken instead of the R-point of the driver’s seat. A seating position with steering control placed in front may be designated as suitable for Child Restraint System installation if requirements for a passenger seating position are fulfilled. The Regulation does not apply to vehicles of category Y.

UNECE server
Excerpts from session reports
GRSP | Session 78 | 1-4 Dec 2025

42. GRSP noted that at its November 2025 session, WP.29 reaffirmed its objective to adopt all documents related to the review of existing UN Regulations related to Automated Driving Systems (ADS) at its June 2026 session and invited the Chairs of the Working Parties to consider various strategies to ensure timely preparation of the required documents. This corresponded to option 1 in informal document WP.29-197-25 and would require all proposals under this agenda item to be adopted by GRSP on this session.

43. Following a general update by the expert from Germany on the first day of the meeting, the GRSP Task Force on Automated Vehicles Regulation Screening (TF-AVRS) continued work on the margins of the meeting to refine the proposals and submitted a number of informal documents to amend the proposals in working documents under this agenda item. GRSP adopted the following proposals :

  1. ECE/TRANS/WP.29/GRSP/2025/11 as amended by GRSP-78-48 as amended (as reproduced in annex IX), with a proposal for supplement 3 to the 04 series of amendments to UN Regulation No. 11,
  2. ECE/TRANS/WP.29/GRSP/2025/12 as amended by GRSP-78-38 (as reproduced in annex X), with a proposal for supplement 1 to the 05 series of amendments to UN Regulation No. 12,
  3. ECE/TRANS/WP.29/GRSP/2025/13 as amended by GRSP-78-32 (as reproduced in annex XI), with a proposal for supplement 5 to the 09 series of amendments to UN Regulation No. 14,
  4. ECE/TRANS/WP.29/GRSP/2025/15 as amended by GRSP-78-33 (as reproduced in annex XII), with a proposal for supplement 3 to the 10 series of amendments to UN Regulation No. 16,
  5. ECE/TRANS/WP.29/GRSP/2025/16 as amended by GRSP-78-42 (as reproduced in annex IV), with a proposal for supplement 1 to the 12 series of amendments to UN Regulation No. 17,
  6. ECE/TRANS/WP.29/GRSP/2025/17 as amended by GRSP-78-31 (as reproduced in annex XIII), with a proposal for supplement 6 to the 01 series of amendments to UN Regulation No. 21,
  7. ECE/TRANS/WP.29/GRSP/2025/18 as amended by GRSP-78-30 (as reproduced in annex XIV), with a proposal for supplement 7 to the 03 series of amendments to UN Regulation No. 29,
  8. ECE/TRANS/WP.29/GRSP/2025/19 as amended by GRSP-78-23-Rev.1 (as reproduced in annex XV), with a proposal for supplement 2 to the 05 series of amendments to UN Regulation No. 94
  9. ECE/TRANS/WP.29/GRSP/2025/20 as amended by GRSP-78-40, as amended (as reproduced in annex XVI), with a proposal for supplement 2 to the 06 series of amendments to UN Regulation No. 95
  10. ECE/TRANS/WP.29/GRSP/2025/33 as amended by GRSP-78-35-Rev.1 as amended (as reproduced in annex V), with a proposal for supplement 1 to the 05 series of amendments to UN Regulation No. 100,
  11. ECE/TRANS/WP.29/GRSP/2025/36 as amended by GRSP-78-29 (as reproduced in annex XVII), with a proposal for supplement 4 to the 04 series of amendments to UN Regulation No. 127
  12. ECE/TRANS/WP.29/GRSP/2025/22 as amended by GRSP-78-39-Rev.1 as amended (as reproduced in annex VII), with a proposal for supplement 4 to the 02 series of amendments to UN Regulation No. 134
  13. ECE/TRANS/WP.29/GRSP/2025/34 as amended by GRSP-78-43 (as reproduced in annex XVIII), with a proposal for supplement 4 to the 02 series of amendments to UN Regulation No. 135
  14. ECE/TRANS/WP.29/GRSP/2025/23 as amended by GRSP-78-24-Rev.1 (as reproduced in annex XIX), with a proposal for supplement 1 to the 04 series of amendments to UN Regulation No. 137
  15. ECE/TRANS/WP.29/GRSP/2025/24 as amended by GRSP-78-27 (as reproduced in annex XX), with a proposal for supplement 2 to the 01 series of amendments to UN Regulation No. 145
  16. ECE/TRANS/WP.29/GRSP/2025/35 as amended by GRSP-78-28-Rev.1 (as reproduced in annex XXI), with a proposal for supplement 1 to the 01 series of amendments to UN Regulation No. 153
  17. ECE/TRANS/WP.29/GRSP/2025/25 as amended by GRSP-78-41 (as reproduced in annex XXII), with a proposal for supplement 2 to the 01 series of amendments to UN Regulation No. 173, and
  18. ECE/TRANS/WP.29/GRSP/2025/26 as amended by GRSP-78-49 (as reproduced in annex XXIII), with a proposal for supplement 1 to the 01 series of amendments to UN Regulation No. 174,
and requested the secretariat to submit them to the June 2026 sessions of WP.29 and AC.1.

GRSP | Session 79 | 1-5 Jun

34. The expert from the European Commission gave a status report (informal document GRSP-79-08) on the activities of the GRSP Task Force on Automated Vehicles Regulation Screening (TF-AVRS). The task force had reviewed all documents adopted last session and submitted an informal document (WP.29-199-06) to WP.29 to correct minor mistakes in three of them before their final adoption. Regarding future work, two gaps currently remained: crash test speeds for low-speed automated vehicles and new steering equipment types. He introduced two proposals for early feedback. Informal document GRSP-79-10 proposes to amend UN Regulation No. 127 (Pedestrian safety) to account for category Y vehicles (without occupants). All other crashworthiness requirements for category Y vehicles are grouped in a new UN Regulation (informal document GRSP-79-09). The text and requirements are based on UN Regulations Nos. 94, 95, 137 and 153. For the annexes, rather than repeating the test procedures present in those UN Regulations, wherever possible, references are made to the original text in the base regulations. The expert from the European Commission announced their intention to submit working documents for the next GRSP session.

WP.29 | Session 199 | 22-26 Jun

64. The World Forum considered draft amendments under agenda items 4.6.1 to 4.6.26. and recommended their submission to AC.1 for voting, with the following amendments:

  1. For ECE/TRANS/WP.29/2026/54: In the title, replace “Supplement 4” by “Supplement 5”.
  2. For ECE/TRANS/WP.29/2026/63: Modify the amendments to paragraphs 5.8.6.1. to 5.8.6.3. to read as follows: Paragraph 5.8.6.1., replace “owner’s manual” by “user’s manual”. Paragraph 5.8.6.1.2., at the end, before the comma, add “(if applicable)”. Paragraph 5.8.6.1.3., in the second sentence, after “driver”, add “and/or ADS”.
  3. For ECE/TRANS/WP.29/2026/65: Modify the amendment to Annex 3, paragraph 1.4.3.11.1. to read as follows: Annex 3, paragraph 1.4.3.11.1., transfer the second sentence to a new paragraph and at the end of this new paragraph, add a new sentence to read: “For vehicles of category X, the “H” point of the most forward outboard passenger’s place shall be taken instead of the H-point of the driver’s place.”.
  4. For ECE/TRANS/WP.29/2026/71: Delete the amendment to Annex 9, paragraph 3.
  5. Where applicable, include the modifications as laid down in WP.29-199-10 and reproduced in Annex VI.

65. The World Forum considered draft amendments under agenda items 4.7.1 to 4.7.20 and recommended their submission to AC.1 for voting with the amendments laid down in informal document WP.29-199-10 and reproduced in Annex VI, where applicable.

66. The World Forum considered draft amendments under agenda items 4.8.1 to 4.8.15 and recommended their submission to AC.1 for voting, with the amendments laid down in informal document WP.29-199-10 and reproduced in Annex VI, where applicable.

68. The World Forum considered the draft amendments under agenda items 4.10.1 to 4.10.36, as modified, where applicable, by document WP.29-199-10 and reproduced in Annex VI. It recommended their submission to AC.1 for voting.

69. The World Forum considered draft amendments under agenda items 4.11.1 and 4.11.14 and recommended their submission to AC.1 for voting with the amendments laid down in informal document WP.29-199-10 and reproduced in Annex VI, where applicable.

GRVA | Session 26 | 14-18 Sep

9. The expert from IEEE, Co-Secretary of the Informal Working Group (IWG) on Artificial Intelligence (AI) presented informal document GRVA-26-07 on the progress of the group’s work. She informed GRVA that the IWG was considering developing a revised approach to the draft reference document (WP.29-199-06) presented to WP.29 in June 2026, with the aim of improving its structure, readability and long-term relevance while maintaining its scope and objectives. She also reported on the proposed extension of the IWG mandate and outlined the planned timeline towards the submission of a formal reference document in 2027. GRVA was informed that the ongoing work would focus on clarifying the scope of AI use cases covered by the document, improving the description of AI applications and benefits, and further developing concepts for the management of AI-related risks in the automotive sector.

10. GRVA took note of the information provided by the Co-Secretary of the IWG on AI.