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UN R117: Proposal for a Supplement 3 to the 04 series of amendments

Document GRBP/2024/23

2 July 2024

80th GRBP session (17-20 Sep)

Proposal from the Wet Grip on Worn Tyres informal group to standardize provisions for the water depth measurement and to reduce the track friction range requirements under the test procedures.

Status: Formal GR review

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Previous Documents, Discussions, and Outcomes

80th GRBP session (17-20 Sep)

6. (c) | UN Regulation No. 117 (Tyre Rolling Resistance, Rolling Noise and Wet Grip)

62nd WT session (5 Sep)

Reference Number:	EVE-74-10
Submitted by:	China
Meeting Session(s):	74th EVE session (18-19 Sep)
Document date:	05 Sep 24
Regarding:	GTR No. 21 EV Power Determination

Reference Number:	SLR-69-07
Submitted by:	OICA
Meeting Session(s):	69th SLR session (10-12 Sep)
Document date:	05 Sep 24
Regarding:	UN R48 Installation of Lighting

Reference Number:	WT-60-08
Meeting Session(s):	60th WT session (12 Jul)
Document date:	05 Sep 24
Regarding:	UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance

Reference Number:	TA-26-04
Submitted by:	JASIC
Meeting Session(s):	26th TA session (26 Sep)
Document date:	05 Sep 24
Regarding:	Tyre abrasion

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