GRVA received a progress report from the Special Interest Group on UN Regulation No. 157 (GRVA-10-34).

GRVA discussed the coordination of work related to this agenda item in line with the guidance provided by AC.2 (GRVA-08-10).

GRVA requested the secretariat to submit GRVA-10-35 to WP.29 and AC.1 for consideration and vote at their November 2021 sessions, subject to final review by GRVA at its September 2021 sessions.

23. The expert from OICA introduced their proposal to extend the scope of UN Regulation No. 157 in ECE/TRANS/WP.29/GRVA/2021/3 (amended by GRVA-09-19) and invited the GRVA expert to provide views and input on the questions in GRVA-09-34.

23bis. The expert from Korea noted that the time gap values were governed by traffic rules and that UN Regulation No. 157 took the reference deceleration values from UN Regulation No. 13- H. He suggested that the corresponding values in UN Regulation No. 13 should be used for heavy vehicles.