GAR

Proposal to

Clarify the minimum heights for markings of tyres with nominal rim diameter codes ≥ 20 and nominal section width ≤ 235
Clarify the minimum heights for markings of tyres with nominal rim diameter codes < 20 and nominal section width > 235
Correct the use of uppercase letters to denote dimensions where lowercase letters had been inserted
Correct the paragraph numbering pursuant to the adoption of Supplement 21
Delete a redundant note at the end of paragraph 6.1.5.3.3., and
Add specifications for tyre sizes 33×11.50R20LT, 35×11.50R17LT, 37×13.50R26LT, 36×15.50R20LT and 40×15.50R26LT.

Reference Number:	WP.29/2017/68
Meeting Session(s):	172nd WP.29 session (20-23 Jun 2017)
Document date:	11 Apr 17
Document status:	Adopted text published
Regarding:	UN R54 CV Tires
Adoption Vote
This proposal (WP.29/2017/68) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 48 applying UN R54 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining.
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Download from UNECE:

Original text | Supplement 22

Entry into force as of: 10 Feb 2018

Original text | Supplement 22 was established by the adoption of the following proposals

WP.29/2017/68 Proposal for Supplement 22 to Regulation No. 54

This change has also been reproduced in Revision 3 | Amendment 4.

Reference Number:	TFGP-04-01
Meeting Session(s):	4th TFGP session (9 Sep)
Document date:	25 Aug 25
Regarding:	UN R48 Installation of Lighting \| UN R149 Road Illumination Devices (RID)

Reference Number:	IWVTA-49-02
Meeting Session(s):	49th IWVTA session (6 Nov)
Document date:	22 Aug 25
Regarding:	UN R0 International Whole Vehicle Type Approval

Reference Number:	A-LCA-SG2-23-01
Meeting Session(s):	23rd A-LCA-SG2 session (28 Aug)
Document date:	22 Aug 25
Regarding:	Automotive Life Cycle Assessment

Reference Number:	TFCS-35-01
Meeting Session(s):	35th TFCS session (11 Sep)
Document date:	22 Aug 25
Regarding:	UN R155 Cybersecurity \| UN R156 SW Updates \| Cyber Security Guidelines \| Software Updates Guidelines