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Latest Documents
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1 Aug 2025 | R51/R138: Agenda for the 13th (August 2025) session | R51/R138-13-08
1 Aug 2025 | A-LCA: Agenda for the 27th (September 2025) session | A-LCA-27-01
1 Aug 2025 | Minutes of the 48th (June 2025) IWVTA informal group session | IWVTA...
1 Aug 2025 | UN R51: Comments on draft Supplement proposal (Annex 7) | R51/R138-1...
1 Aug 2025 | UN R138: Draft amendment on AVAS sound levels | R51/R138-13-06
1 Aug 2025 | UN R51: Draft guidance on interpretation of the footnote on generate...
1 Aug 2025 | UN R51: Proposal for corrections to the 03 series of amendments | R5...
1 Aug 2025 | UN R51: Draft proposal to amend document GRBP/2025/29 | R51/R138-13-03
(43 posted during the past week)
R51/R138: Agenda for the 13th (August 2025) session
Reference Number:
R51/R138-13-08
Meeting Session(s):
13th R51/R138 session (6 Aug)
Document date:
01 Aug 25
Regarding:
UN R51 Vehicle Noise
A-LCA: Agenda for the 27th (September 2025) session
Reference Number:
A-LCA-27-01
Meeting Session(s):
27th A-LCA session (22-23 Sep)
Document date:
01 Aug 25
Regarding:
Automotive Life Cycle Assessment
Minutes of the 48th (June 2025) IWVTA informal group session
Reference Number:
IWVTA-49-01
Meeting Session(s):
49th IWVTA session (6 Nov)
Document date:
01 Aug 25
Regarding:
UN R0 International Whole Vehicle Type Approval
UN R51: Comments on draft Supplement proposal (Annex 7)
Reference Number:
R51/R138-13-07
Meeting Session(s):
13th R51/R138 session (6 Aug)
Document date:
01 Aug 25
Regarding:
UN R51 Vehicle Noise
View full document file for more information
UN R138: Draft amendment on AVAS sound levels
Reference Number:
R51/R138-13-06
Meeting Session(s):
13th R51/R138 session (6 Aug)
Document date:
01 Aug 25
Regarding:
UN R138 Quiet Road Transport Vehicles
UN R51: Draft guidance on interpretation of the footnote on generated sounds
Reference Number:
R51/R138-13-05
Meeting Session(s):
13th R51/R138 session (6 Aug)
Document date:
01 Aug 25
Regarding:
UN R51 Vehicle Noise
View full document file for more information
UN R51: Proposal for corrections to the 03 series of amendments
Informal consolidated text for better reading.
Reference Number:
R51/R138-13-04
Submitted by:
OICA
Meeting Session(s):
13th R51/R138 session (6 Aug)
Document date:
01 Aug 25
Regarding:
UN R51 Vehicle Noise
View full document file for more information
UN R51: Draft proposal to amend document GRBP/2025/29
Reference Number:
R51/R138-13-03
Meeting Session(s):
13th R51/R138 session (6 Aug)
Document date:
01 Aug 25
Regarding:
UN R51 Vehicle Noise
View full document file for more information
Upcoming Meetings
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RD-ASEP R51/R138 Subgroup | Session 13 | 6 Aug
Safer and Cleaner Used and New Vehicles in Developing Markets | Session ...
GRSP Task Force on Automated Vehicles and Regulation Screening | Session...
GRBP Task Force on Automated Vehicle Regulation Screening | Session 17 |...
Informal Working Group on Children Left in Vehicles | Session 11 | 26-28...
Working Party on Noise and Tyres | Session 82 | 3-5 Sep
Electric Vehicles and the Environment | Session 87 | 4 Sep
Working Party on Automated and Connected Vehicles | GRVA Scenarios Works...
Electric Vehicle Safety | Session 30 | 9-11 Sep
Simplification of Lighting and Light-Signalling Regulations | Session 74...
Informal Working Group on Automated Driving Systems | Session 13 | 10-11...
Automotive Life Cycle Assessment | Session 26 | 10 Sep
View complete calendar
Latest Changes to Regulations
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5 Aug 2024 GTR No. 21 | Amendment 1 | Appendix 1
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Regulation:
GTR No. 21 | Electric Vehicle System Power Determination
Document:
GTR No. 21
5 Aug 2024 GTR No. 21 | Amendment 1
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Regulation:
GTR No. 21 | Electric Vehicle System Power Determination
Document:
GTR No. 21
5 Aug 2024 GTR No. 22 | Amendment 1 | Appendix 1
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Regulation:
GTR No. 22 | Electrified Vehicle Battery Durability
Document:
GTR No. 22
5 Aug 2024 GTR No. 22 | Amendment 1
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Regulation:
GTR No. 22 | Electrified Vehicle Battery Durability
Document:
GTR No. 22
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6 May 2025 CO2 emissions EP fast-tracks vote on flexibility measures for...
10 Mar 2025 Electric vehicles and climatisation measuring the impact on...
29 Jan 2025 EU Parliament report on vehicle circularity and end-of-life...
9 Jan 2025 High-visibility clothing may thwart pedestrian crash prevention...
30 Dec 2024 Australia ceases UN R147 application
20 Dec 2024 NHTSA Proposes National Program for Vehicles with Automated...
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UN R122: Proposal for Supplement 7
Proposal to introduce provisions for radiant warmers.
Reference Number:
WP.29/2023/100
Meeting Session(s):
191st WP.29 session (13-16 Nov 2023)
Document date:
25 Aug 23
Document status:
Adopted by WP.29
Regarding:
UN R122 Heating Systems
Adoption Vote
This proposal (WP.29/2023/100) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R122 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining.
View full document file for more information
UN Regulation No. 122
Heating Systems
00 series of amendments
Documents establishing the amendments
Original text
Corrigendum 1
Corrigendum 2
Supplement 1
Supplement 2
Supplement 3
Supplement 4
Supplement 5
Supplement 6
Supplement 7
WP.29/2023/100