63. The representative of the European Commission, introduced ECE/TRANS/WP.29/GRPE/2024/4, as amended by GRPE-90-25-Rev.3 (issued as a post-session document) to include a vehicle-specific non-friction braking measurement procedure, definition of brake emission families and other changes with the aim of improving the overall protocol. He also briefly introduced GRPE-90-06 and GRPE-90-26 providing further background and justifications for the proposed amendments to UN GTR No. 24

64. The representative of the Netherlands sought further clarifications about the relaxation of ceramic disc operating temperature range. The representative of the EC informed that such discs are operating better at lower temperature, hence the needs for a specific lower temperature range compared with other disc materials. The representative of the Netherlands agreed with the technical and proposed a text improvement to make the provisions clearer, as reflected in GRPE-90-25-Rev.1.

65. GRPE adopted ECE/TRANS/WP.29/GRPE/2024/4, as amended by GRPE-90-25-Rev.3, as reflected in Addendum 1 and requested the secretariat to submit it to WP.29 and AC.3 for consideration and vote at their June 2024 sessions as draft new Amendment 1 to UN GTR No. 24 (Laboratory Measurement of Brake Emissions for Light-Duty Vehicles).