PMP-56.3-02
PMP TF 3a Consolidation & Update of UNR179 & GTR24
Source(s)
Date
7 May 2026
Status
Subject
Meeting(s)

PMP TF 3a is consolidating and updating UN R179 and GTR 24 through weekly web-meetings organized by JRC with 30+ participants. Over 50 topics have been identified and categorized by priority. Key issues include aligning Type Approval and Conformity of Production testing procedures, harmonizing cooling air adjustment requirements, clarifying vehicle c-factor calculations, adding definitions for light-duty vehicles exceeding 3.5 tonnes, and addressing test wheel load per GRPE-94-15e. The task force is preparing track changes versions and supporting documentation for major changes.

UNECE server
Excerpts from session reports
GRPE | Session 94 | 17-19 Mar

55. The representative of OICA introduced GRPE-94-14 and GRPE-94-15. The Chair of the IWG on PMP suggested to bring this topic to the IWG on PMP for further discussion prior to a consideration by GRPE. GRPE supported this proposal.

56. The representative of CLEPA introduced ECE/TRANS/WP.29/GRPE/2026/26, as amended by GRPE-94-36-Rev.1, and proposed to postpone the consideration of both proposals to forthcoming sessions of GRPE.

57. The representative of the EC emphasized the good progress achieved during this GRPE session, with a potential way forward identified for information sharing; he added that further steps should ideally be done at UNECE under the framework of WP.29 and its subsidiary bodies. He insisted on the importance to preserve the environmental integrity of new braking systems as detailed in UN Regulation No. 179 also for replacement parts.

58. The representatives of the Netherlands and the UK echoed the comments from the representative of the EC, and the representative of Japan highlighted the importance of taking market data into account when developing provision for replacement brake parts. GRPE noted the topic was to be considered again during forthcoming sessions.