89. The expert from OICA introduced ECE/TRANS/WP.29/GRVA/2021/25, an amendment proposal to the electric parking brake provisions in UN Regulation No. 13 already discussed at the previous session. He justified that a new series of amendments was necessary as the proposal would impact the design of vehicles and would therefore need to provide lead time.

90. The expert from Germany confirmed that his previous comments regarding buses were addressed by the proposal tabled at this session.

91. GRVA adopted ECE/TRANS/WP.29/GRVA/2021/25 (without square brackets) and requested the secretariat to submit it as draft 12 series of amendments to UN Regulation No. 13 to WP.29 and AC.1 for consideration and vote at their March 2022 sessions.

92. The expert from CLEPA introduced GRVA-11-06 with an amendment proposal aimed to resolve problems with installation of stronger spring brake actuators in trailers to realize higher deceleration in the case of emergency braking caused by a cut of the supply line between towing vehicle and trailer. GRVA requested the secretariat to distribute GRVA-11-06 with an official symbol at the next session.

93. The expert from OICA introduced GRVA-11-42, an amendment proposal to clarify the warning actuation requirements in case the parking braking system would be automatically requested to apply the parking brake. GRVA requested the secretariat to distribute GRVA-11-42 with an official symbol at the next session.

94. The expert from OICA introduced GRVA-11-39, proposing amendments to ECE/TRANS/WP29/2021/73, recently adopted by WP.29 and AC.1. GRVA noted that the official document, currently notified by the Office of Legal Affairs to the Contracting Parties, could not be amended at this stage. GRVA requested the secretariat to distribute GRVA-11-39 as an amendment proposal to UN Regulation No. 13-H with an official symbol at the next session.