GAR

Thursday, 21 August 2025
Week 34

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Latest Documents

20 Aug 2025 | Electric Vehicles and the Environment: Agenda for the 87th (Septembe...

20 Aug 2025 | Proposal for Tyre Abrasion Index Stage 2 | TA-37-09

20 Aug 2025 | Tyre abrasion: XL tyres allowance | TA-37-08

20 Aug 2025 | proposal for "Road Legal Race" tyre definition | TA-37-07

19 Aug 2025 | UN R51: Draft proposal to amend document GRBP/2025/25 | GRBP-TFAVRS-...

19 Aug 2025 | ADS Marker Lamps: Report on Outdoor Observation Experiment to Invest...

19 Aug 2025 | Tyre abrasion: Consideration of improving the accuracy of the drum t...

19 Aug 2025 | Tyre abrasion: Feedback on document GRBP/2025/27 (proposal for new U...

(29 posted during the past week)

Electric Vehicles and the Environment: Agenda for the 87th (September 2025) session

Reference Number:	EVE-87-01/Rev.1
Meeting Session(s):	87th EVE session (4 Sep)
Document date:	20 Aug 25
Regarding:	GTR No. 21 EV Power Determination \| GTR No. 22 EV Battery Durability \| HD EV Battery Durability

Download from UNECE:

.pdf format

Proposal for Tyre Abrasion Index Stage 2

Reference Number:	TA-37-09
Submitted by:	France
Meeting Session(s):	37th TA session (21 Aug)
Document date:	20 Aug 25
Regarding:	Tyre abrasion

Download from UNECE:

.pdf format

Tyre abrasion: XL tyres allowance

Reference Number:	TA-37-08
Submitted by:	ETRTO
Meeting Session(s):	37th TA session (21 Aug)
Document date:	20 Aug 25
Regarding:	Tyre abrasion

Download from UNECE:

.ppt format

proposal for "Road Legal Race" tyre definition

Reference Number:	TA-37-07
Submitted by:	ETRTO
Meeting Session(s):	37th TA session (21 Aug)
Document date:	20 Aug 25
Regarding:	Tyre abrasion

Download from UNECE:

.ppt format

UN R51: Draft proposal to amend document GRBP/2025/25

Reference Number:	GRBP-TFAVRS-17-06
Meeting Session(s):	17th GRBP-TFAVRS session (20 Aug)
Document date:	19 Aug 25
Regarding:	UN R51 Vehicle Noise \| Regulation Screening for ADS
View full document file for more information

Download from UNECE:

.docx format

ADS Marker Lamps: Report on Outdoor Observation Experiment to Investigate Requirements

Reference Number:	AVSR-26-02/Rev.1
Submitted by:	NTSEL
Meeting Session(s):	26th AVSR session (1 Jul)
Document date:	19 Aug 25
Regarding:	AV Signaling Requirements

Download from UNECE:

.ppt format

Tyre abrasion: Consideration of improving the accuracy of the drum test method

Reference Number:	TA-37-06
Submitted by:	JASIC
Meeting Session(s):	37th TA session (21 Aug)
Document date:	19 Aug 25
Regarding:	Tyre abrasion

Download from UNECE:

.pdf format

Tyre abrasion: Feedback on document GRBP/2025/27 (proposal for new UN Regulation)

Reference Number:	TA-37-05
Meeting Session(s):	37th TA session (21 Aug)
Document date:	19 Aug 25
Regarding:	Tyre abrasion
View full document file for more information

Download from UNECE:

.docx format

Upcoming Meetings

Task Force on Tyre Abrasion | Session 37 | 21 Aug

Informal Working Group on Children Left in Vehicles | Session 11 | 26-28...

Wet Grip on Worn Tyres | Session 69 | 26 Aug

Informal Working Group on Artificial Intelligence | Session 1 | 27 Aug

A-LCA Subgroup 2: Material & Material Recycling | Session 23 | 28 Aug

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

10 Jul 2025 UN R13-H Revision 4 | Amendment 6 (Light Vehicle Braking)

Regulation:	UN Regulation No. 13-H \| Light-Duty Vehicle Braking
Document:	Revision 4 \| Amendment 6
Corresponds to:	02 series of amendments (Entered into force on 12 Jun 2025)
Based on:	Document WP.29/2024/147 Proposal to align UN R13-H with technical advances and the emergence of a new type of braking system that employs stored electrical energy for both the control transmission and the energy transmission. Document WP.29-194-08

7 Jul 2025 UN R172 Corrigendum 1 (Traction/snow retreaded tyres)

Regulation:	UN Regulation No. 172 \| Retreaded tyres: Snow performance and/or traction classification
Document:	Corrigendum 1

13 Mar 2025 UN R172 UN R172 (Traction/snow retreaded tyres)

Regulation:	UN Regulation No. 172 \| Retreaded tyres: Snow performance and/or traction classification
Document:	UN R172
Corresponds to:	Original text (Entered into force on 10 Jan 2025)
Based on:	Document WP.29/2024/75

12 Mar 2025 UN R138 Revision 1 | Amendment 4 (Quiet Road Transport Vehicles)

Regulation:	UN Regulation No. 138 \| Quiet Road Transport Vehicles
Document:	Revision 1 \| Amendment 4
Corresponds to:	02 series of amendments (Entered into force on 10 Jan 2025)
Based on:	Document WP.29/2024/66 Proposal to specify the working principles of an Acoustic Vehicle Alerting System (AVAS) and to reduce measurement uncertainties during the measurement of the one third octave bands.

27 Jan 2025 UN R13-H Revision 4 | Amendment 5 (Light Vehicle Braking)

Regulation:	UN Regulation No. 13-H \| Light-Duty Vehicle Braking
Document:	Revision 4 \| Amendment 5
Corresponds to:	01 series of amendments \| Supplement 5 (Entered into force on 10 Jan 2025)
Based on:	Document WP.29/2024/59 Proposal to adapt the regulation to allow for the approval of vehicles equipped with both an Automated Driving System and a manual driving mode.

9 Jan 2025 UN R167 Amendment 1 (CV Direct Vision)

Regulation:	UN Regulation No. 167 \| UN Regulation on Commercial Vehicle Direct Vision
Document:	Amendment 1
Corresponds to:	Original text \| Supplement 1 (Entered into force on 22 Sep 2024)
Based on:	Document WP.29/2024/13 Proposal to introduce an alternative method for assessment of the frontal visible volume to address future cab designs with narrower distances between A pillars. The current measurement method is dependent on the position of the A pillar. The alternative method is independent of the cab design and would be available for use at the manufacturer’s discretion.

16 Dec 2024 UN R148 Revision 1 | Amendment 2 (Light-Signalling Devices)

Regulation:	UN Regulation No. 148 \| Light-Signalling Devices (LSD)
Document:	Revision 1 \| Amendment 2
Corresponds to:	01 series of amendments \| Supplement 2 (Entered into force on 22 Sep 2024)
Based on:	Document WP.29/2024/23 Proposal to clarify and correct the text and improve the definition of photometric stability.

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Recent Headlines

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10 Mar 2025 Electric vehicles and climatisation measuring the impact on...

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9 Jan 2025 High-visibility clothing may thwart pedestrian crash prevention...

30 Dec 2024 Australia ceases UN R147 application

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Working Party on Pollution and Energy

Session 86

30 May-2 Jun 2022 | Geneva

GRPE is planning to hold a workshop on life-cycle assessment (LCA) for carbon impact of motor vehicles on 31 May.

Agenda Item 13. Lifetime compliance

Documentation

Annotations

GRPE-86-05 Particulate Number PTI in Switzerland

Particulate Number PTI in Switzerland

Reference Number:	GRPE-86-05
Submitted by:	Switzerland
Meeting Session(s):	86th GRPE session (30 May-2 Jun 2022)
Document date:	23 May 22
Regarding:	PTI: Whole Life Compliance
View full document file for more information

Download from UNECE:

.pdf format

GRPE-86-05 Particulate Number PTI in Switzerland

Particulate Number PTI in Switzerland

Reference Number:	GRPE-86-05
Submitted by:	Switzerland
Meeting Session(s):	86th GRPE session (30 May-2 Jun 2022)
Document date:	23 May 22
Regarding:	PTI: Whole Life Compliance
View full document file for more information

Download from UNECE:

.pdf format

GRPE-86-30 Periodic Technical Inspection: Particle Number (PN) Measurements