International Organization of Motor Vehicle Manufacturers
23 Apr 2024 GTR 24: Review for applicability to ADS vehicles (OICA) GRPE-TF-AVRS-12-06/Rev.1 2024-04-23 OICA
5 Aug 2025 Brake emissions: Proposal for a new UN Regulation (OICA) GRPE/2025/18 2025-08-05 Proposal to transpose GTR 24 on laboratory procedures for the measurement of brake particle emissions into a UN Regulation. An <a href="https://wiki.unece.org/display/trans/As+of+September+16%2C+2025" target="_blank">informal document amending this proposal</a> is under development. OICA
22 Sep 2022 Input for brake emissions GTR: Annex 3 (OICA) PMP-52.11-01 2022-09-22 OICA
25 May 2022 Brake wear emissions: OICA contribution to PMP discussions (OICA) PMP-52.09-02 2022-05-25 OICA
13 Dec 2022 Brake emissions: Data Collection and Energy Share statement (OICA) PMP-52.14-02 2022-12-13 OICA
23 Nov 2022 Brake emissions; Proposal for family building (OICA) PMP-52.13-05 2022-11-23 OICA
23 Nov 2022 Brake emissions: Data collection and initial response to JRC proposal on regenerative braking (OICA) PMP-52.13-06 2022-11-23 OICA
2 Dec 2021 OICA views on brake wear particles (OICA) PMP-52.7-09 2021-12-02 OICA
9 Jan 2023 Brake emissions: Comments on the draft GTR text (OICA) PMP-53-02 2023-01-09 OICA
9 Jan 2023 Brake emissions: Part 2 of comments on the draft text (version as of 14 December 2022) (OICA) PMP-53-03 2023-01-09 OICA
27 Apr 2023 Input for brake emissions GTR (OICA) PMP-53.1-04 2023-04-27 OICA
29 Sep 2023 Priorities for GTR-24 Amendment and Beyond (OICA) PMP-53.4-04 2023-09-29 Comments on <ul><li>Overview and priorities</li><li>Technical details to ANNEX-C and GTR-24</li><li>Implementation of multiple sampling</li><li>GTR-24 Testing boundaries for Light weight discs (see separate file)</li><li>Correlation: WLTP Brake / WLTP-Exhaust</li><li>Friction share family building</li><li>Axle specific friction share coefficients.</li></ul> OICA
25 May 2023 Brake emissions GTR: Input to the PMP informal group (OICA) PMP-53.2-05 2023-05-25 <ul><li>Non-friction energy share methods</li><li>Status of informal document Annex-C</li><li>Status of informal document Annex-C – ToDo’s</li><li>Accuracy of Pressure Transducers and Calibration protocol</li><li>Effect of 0.5 bar cut-off criteria</li><li>Calculation of energy weighted c<sub>p</sub>: WLTP-Brake vs. Trip 10</li><li>Data comparison Method B</li><li>Correlation: WLTP Brake / WLTP-Exhaust</li><li>Correlation plot c-Factor WLTP Brake Full vs Trip 10</li><li>Alternative methods</li><li>Development/Homologation Flow</li></ul> OICA
22 Nov 2023 GTR 24: Contribution to PMP discussions (OICA) PMP-53.5-05 2023-11-22 <ul><li>Statement on Brake Particle filter testing</li><li>Correlation of Method B and Method D (CAN)</li><li>OICA input to ILS-3</li><li>Aftermarket and Original replacement parts – definitions</li></ul> OICA
30 Jun 2023 OICA Working-Group on Ducting & Enclosure for brake emission testing (OICA) PMP-53.3-06 2023-06-30 OICA
29 Sep 2023 GTR 24: Temperature limits for non-gray cast iron rotors (OICA) PMP-53.4-06 2023-09-29 OICA
24 Nov 2023 Views on HDV brake wear particles (OICA) PMP-53.5-06 2023-11-24 Regulatory and Technical Differences Between HDV and LDV Braking Systems and Brake Emissions. OICA
29 Sep 2023 Working-Group on Ducting & Enclosure for brake emission testing (OICA) PMP-53.4-07 2023-09-29 OICA
28 Jan 2025 Input for the 27 January 2025 PMP informal group session (OICA) PMP-54.3-02 2025-01-28 OICA
18 Dec 2024 GTR 24: Draft amendment proposal (OICA) PMP-54.2-04 2024-12-18 OICA
12 Mar 2025 GTR 24: Input for the 11 March 2025 PMP informal group session (OICA) PMP-54.4-07 2025-03-12 OICA
12 Jan 2024 Input for the 54th PMP informal group session (OICA) PMP-54-16 2024-01-12 <ul><li>Equivalency of Method B and Method D (CAN)</li><li>Statement to Brake Particle filters</li><li>Vehicle selection / Family building</li><li>Fuel Cell vehicles</li></ul> OICA
25 Mar 2025 Input for the 55th PMP informal group session (OICA) PMP-55-07 2025-03-25 <ul><li>Additional chassis dyno quality criteria</li><li>Threshold pressure calculation method</li><li>Table 5.3</li><li>Annex C clarifications and adaptations</li></ul> OICA
29 Sep 2025 Inputs for PMP meeting on 26th of September 2025 (OICA) PMP-55.2-08 2025-09-29 OICA
15 Oct 2025 GTR 24 and UNR on brake emissions: Input for PMP informal group discussions (OICA) PMP-56-04 2025-10-15 OICA
3 Mar GTR 24: Procedure for vehicles with limited speed (OICA) PMP-56.1-12 2026-03-03 OICA