GAR | GRBP-77-03

Regulation:	GTR No. 22 \| Electrified Vehicle Battery Durability
Document:	GTR No. 22

Regulation:	GTR No. 22 \| Electrified Vehicle Battery Durability
Document:	GTR No. 22

Regulation:	GTR No. 9 \| Pedestrian Safety
Document:	GTR No. 9

Regulation:	GTR No. 9 \| Pedestrian Safety
Document:	GTR No. 9

Regulation:	GTR No. 13 \| Hydrogen and Fuel Cell Vehicle Safety
Document:	Amendment 1 \| Corrigendum 1

Worn tyres: Revised Terms of Reference of the Informal Working Group on Wet Grip Performance for Tyres in a Worn State

Document GRBP-77-03

6 January 2023

77th GRBP session (7-10 Feb 2023)

78th GRBP session (30 Aug-1 Sep 2023)

7. (c) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)

21. The expert of the Informal Working Group on Wet Grip Performance of Tyres in Worn State (IWG WGWT) presented their status report (GRBP-78-16) and draft updated Terms of Reference (GRBP-78-15). GRBP adopted the revised Terms of Reference, as laid down in annex III to the session report.

77th GRBP session (7-10 Feb 2023)

5. (e) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)

20. On behalf of the Informal Working Group on Wet Grip Performance of Tyres in Worn State (IWG WGWT), the expert from France reported on its progress (GRBP-77-30) and proposed to update its Terms of Reference (GRBP-77-03). GRBP decided to extend the mandate of IWG WGWT until February 2026 and adopted its revised Terms of Reference, as contained in annex II to the session report.

Reference Number:	WP.29/2025/2
Meeting Session(s):	195th WP.29 session (3-7 Mar 2025)
Document date:	24 Dec 24
Document status:	Formal WP.29 review
Regarding:	Communications/Connectivity

Reference Number:	EVE-79-05
Meeting Session(s):	79th EVE session (17 Dec)
Document date:	23 Dec 24
Regarding:	GTR No. 21 EV Power Determination \| GTR No. 22 EV Battery Durability \| HD EV Battery Durability

Reference Number:	VIAQ-30-09
Meeting Session(s):	30th VIAQ session (11 Oct)
Document date:	23 Dec 24
Regarding:	MR 3: VIAQ

Reference Number:	WT-64-03
Meeting Session(s):	64th WT session (16 Dec)
Document date:	22 Dec 24
Regarding:	UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance

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Documents concerning UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance

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