GAR | GRVA/2021/28

UN R90: Proposal for amendments

Document GRVA/2021/28

14 July 2021

11th GRVA session (27 Sep-1 Oct 2021)

Proposal allows discs with a different geometry to be included in the same group as long as the disc itself is subject to lower thermal and mechanical stresses than the reference disc. Aims at simplifying the definition of disk groups, reducing their number, while providing the same guarantees from a technical point of view.

Submitted by Italy

Status: Superseded

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Previous Documents, Discussions, and Outcomes

186th WP.29 session (7-11 Mar 2022)

4.7.6. | Proposal for Supplement 8 to 02 series of amendments to UN Regulation No. 90 (Replacement brake parts)

11th GRVA session (27 Sep-1 Oct 2021)

10. | UN Regulation No. 90

100. The expert from Italy presented GRVA-11-35, introducing ECE/TRANS/WP.29/GRVA/2021/28 and ECE/TRANS/WP.29/GRVA/2021/29. He explained that Annex 15 was leading to a high number of groups to be tested and therefore was inducing an overproportioned test workload due to the grouping criteria.

101. GRVA adopted ECE/TRANS/WP.29/GRVA/2021/28 and requested the secretariat to submit it as draft supplement to UN Regulation No. 90 to WP.29 and AC.1 for consideration and vote at their March 2022 sessions.

102. The expert from the United Kingdom of Great Britain and Northern Ireland questioned the relevance of the amendments proposed in Table 1 in ECE/TRANS/WP.29/GRVA/2021/29. The expert from Italy volunteered to provide more details for review at the next session.

103. GRVA agreed to resume discussion on ECE/TRANS/WP.29/GRVA/2021/29 at its twelfth session.

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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