88. GRVA resumed its discussion on park brake warning requirements in the case of electric parking brakes, based on a revised proposal in GRVA-13-22 and the supporting material in the presentation GRVA-13-25. Following discussion, GRVA developed a revised proposal.

89. GRVA adopted GRVA-13-22/Rev.1 (based on ECE/TRANS/WP.29/GRVA/2022/11 and reproduced in Annex III) and requested the secretariat to submit it, as supplements to the 11 and 12 series of amendments to UN Regulation No. 13, to WP.29 and AC.1 for consideration and vote at their November 2022 sessions.

90. The expert from OICA introduced GRVA-13-24 proposing an update for the measurement of the Peak Braking Coefficient (PBC) in UN Regulation No. 140, by introducing a reference to the new American Society for Testing and Materials (ASTM) Standard Reference Test Tyre F2493. The expert from Canada mentioned that the proposal was consistent with similar work done in other jurisdictions and supported it.

91. GRVA requested the secretariat to distribute GRVA-13-24 with an official symbol at the next GRVA session (in September 2022).