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UN R51: Explanatory note regarding documents GRBP/2023/12 and GRBP-77-05

Document GRBP-77-26

7 February 2023

77th GRBP session (7-10 Feb 2023)

Submitted by ISO

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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)

5. The experts from the Informal Working Groups on Measurement Uncertainties (IWG MU) and on Additional Sound Emission Provisions (IWG ASEP), as well as from ISO, presented editorial corrections and clarifications to the 03 series of amendments to UN Regulation No. 51 (ECE/TRANS/WP.29/GRBP/2023/12, GRBP-77-05 and GRBP-77-26). GRBP supported these amendments and noted that they were already included in ECE/TRANS/WP.29/2023/2 that would be considered by WP.29 at its forthcoming session in March 2023.

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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