GRSP/2025/26
UN R174: Proposal for a Supplement 1 to the 01 series of amendments
Source(s)
Date
22 Sep 2025
Status
GR amended and approved
Subject
Impact
01 series of amendments | Supplement 1
Meeting(s)

Proposal to amend UN R174 to apply the Regulation to vehicles equipped with an Automated Driving System. The amendments modify provisions for vehicles of category X and vehicles without driver and manual driving controls. Changes include clarifying folding seat exemptions, removing the neutral transmission requirement for first-level warnings, harmonizing “vehicle master control switch” terminology, ensuring drivers receive initial warnings when entering vehicles with remotely activated switches, clarifying voice communication during emergency calls, defining ADS feature types, and modifying testing procedures and requirements for safety-belt reminders in vehicles with ADS.

Downloads
UNECE server
Related documents
GRSP-TF-AVRS-20-09
UN R174: Draft proposal to enable application to ADS vehicles
GRSP-TF-AVRS-21-06
UN R174: Comments on the proposal to enable application to ADS vehicles
GRSP-TF-AVRS-21-25
UN R174: Comments on amendments to enable application to ADS vehicles
GRSP/2025/43
UN R174: Proposal for a Supplement (Formal GR review)
GRSP-77-73
UN R174: Proposal for Supplement 1 to the original text and its 01 series of amendments (Informal GR review)
GRSP-78-49
UN R174: Proposal for supplement 1 to 01 series of amendments (Approved by GR)
Excerpts from session reports
GRSP | Session 78 | 1-4 Dec 2025

40. The expert from OICA presented ECE/TRANS/WP.29/GRSP/2025/43 with a proposal to allow the discontinuation of second level warnings when other audible safety warnings are triggered. The experts from France, Republic of Korea and United Kingdom supported the idea in principle but thought that the text needed to be more precise. The expert from OICA offered to work with interested parties to further refine the proposal.

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.

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.

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