GAR | WP.29/2022/86

UN R106: Proposal for Supplement 20

Document WP.29/2022/86

5 April 2022

187th WP.29 session (20-24 Jun 2022)

Proposal from GRBP to align the definitions of “diagonal” or “bias-ply” and “bias belted” tyre structures to the definitions given in UN R30 and R75, to improve the text with regard to description of the composition of the size designation for metric tyres, and to resolve an apparent contradiction regarding the prefixes IF and VF.

Status: Adopted by WP.29

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Previous Documents, Discussions, and Outcomes

187th WP.29 session (20-24 Jun 2022)

4.9.4. | Proposal for Supplement 20 to the original series of amendments to UN Regulation No. 106 (Tyres for agricultural vehicles and their trailers)

75th GRBP session (8-11 Feb 2022)

4. (c) | UN Regulation No. 106 (Tyres for agricultural vehicles and their trailers)

19. GRBP considered a proposal that had been prepared by the expert from ETRTO with the aim to align the definitions of “diagonal”, “bias-ply” and “bias belted” tyre structures with the definitions in UN Regulations Nos. 30 and 75 (ECE/TRANS/WP.29/GRBP/2022/7). GRBP adopted the proposal and requested the secretariat to submit it for consideration and vote at the June 2022 sessions of WP.29 and AC.1 as draft Supplement 20 to UN Regulation No. 106.

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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