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Latest Documents
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1 Aug 2025 | R51/R138 Subgroup: Agenda for the 13th (August 2025) session | R51/R...
1 Aug 2025 | Automotive Life Cycle Assessment: Agenda for the 27th (September 202...
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1 Aug 2025 | UN R51: Draft guidance on interpretation of the footnote on generate...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 Subgroup: 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
Automotive Life Cycle Assessment: 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UN R51: Draft guidance on interpretation of the footnote on generated sounds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
Close
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
View last six months
Recent Headlines
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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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Working Party on Noise
Session 64
5-7 Sep 2016 | Geneva
Agenda Item 4.
Regulation No. 51 (Noise of M and N categories of vehicles)
Documentation