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Latest Documents

1 Aug 2025 | UN R51: Draft guidance on interpretation of the footnote on generate...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
1 Aug 2025 | UN R51: Proposal for corrections to the 03 series of amendments | R...
1 Aug 2025 | R51/R138: Agenda for the 13th (August 2025) session | R51/R138-13-01
31 Jul 2025 | ADS marker lamp: Draft technical characteristics | AVSR-27-01
31 Jul 2025 | Minutes of the 21st STCBC informal group session | STCBC-21-05
31 Jul 2025 | Minutes of the 22nd STCBC informal group session | STCBC-22-05/Rev.1
(5 posted today) (41 posted during the past week)
UN R51: Draft guidance on interpretation of the footnote on generated sounds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
Download from UNECE: .docx format
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
Download from UNECE: .docx format
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
Download from UNECE: .docx format
UN R51: Proposal for corrections to the 03 series of amendments

This proposal concerns primarily amendments to Annex 7 of UN Regulation No. 51. The proposed changes are based on the 03 series of amendment to UN Regulation No. 51 up to Supplement 10.

Reference Number: R51/R138-13-02
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
Download from UNECE: .docx format
R51/R138: Agenda for the 13th (August 2025) session
Reference Number: R51/R138-13-01
Meeting Session(s): 13th R51/R138 session (6 Aug)
Document date: 01 Aug 25
Regarding: UN R51 Vehicle Noise  | UN R138 Quiet Road Transport Vehicles
Download from UNECE: .docx format
ADS marker lamp: Draft technical characteristics
Reference Number: AVSR-27-01
Submitted by: GTB
Meeting Session(s): 27th AVSR session (29 Sep)
Document date: 31 Jul 25
Regarding: AV Signaling Requirements
Download from UNECE: .ppt format
Minutes of the 21st STCBC informal group session
Reference Number: STCBC-21-05
Meeting Session(s): 21st STCBC session (9 Jul 2024)
Document date: 19 Aug 24
Regarding: UN R44 Child Restraint Systems  | UN R129 Enhanced Child Restraints  | UN R170 Bus and Coach CRS
Download from UNECE: .pdf format
Minutes of the 22nd STCBC informal group session
Reference Number: STCBC-22-05/Rev.1
Meeting Session(s): 22nd STCBC session (22 Aug 2024)
Document date: 31 Jul 25
Regarding: UN R170 Bus and Coach CRS
Download from UNECE: .pdf format

Upcoming Meetings

RD-ASEP R51/R138 Subgroup | Session 13 | 6 Aug
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Latest Changes to Regulations

5 Aug 2024 GTR No. 21 | Amendment 1 | Appendix 1
Regulation: GTR No. 21 | Electric Vehicle System Power Determination
Document: GTR No. 21
5 Aug 2024 GTR No. 21 | Amendment 1
Regulation: GTR No. 21 | Electric Vehicle System Power Determination
Document: GTR No. 21
5 Aug 2024 GTR No. 22 | Amendment 1 | Appendix 1
Regulation: GTR No. 22 | Electrified Vehicle Battery Durability
Document: GTR No. 22
5 Aug 2024 GTR No. 22 | Amendment 1
Regulation: GTR No. 22 | Electrified Vehicle Battery Durability
Document: GTR No. 22
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