GAR | GRBP-77-10/Rev.1

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Noise Measurement Uncertainties informal group status report to GRBP

Document GRBP-77-10/Rev.1

3 February 2023

77th GRBP session (7-10 Feb 2023)

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Previous Documents, Discussions, and Outcomes

77th GRBP session (7-10 Feb 2023)

3. | UN Regulation No. 51 (Noise of M and N categories of vehicles)

6. The Chair of IWG MU reported on their activities (GRBP-77-10-Rev.1) and presented amendments to the document of reference on measurement uncertainties (GRBP-77-07 and GRBP-77-08). GRBP adopted the amendments and requested the secretariat to publish the revised document of reference on the GRBP website.

Relates to UN R51 | UN R117 |

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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