UN R78: Proposal for a Supplement to the 05 series of amendments
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Proposes to align UN Regulation No. 78 with the latest amendments to UN Regulation No. 13-H regarding the deceleration thresholds for the activation of the stop lamp(s) under regenerative braking

Reference Number: GRVA/2021/26
Origin: IMMA
Date: 14 July 2021
Proposal Status: Superseded
Related Documents:
GRVA-10-11 | UN R78: Proposal for a new Supplement to the 04 and 05 series of amendments
GRVA-11-22 | UN R78: Proposal for amendment to supplement to 05 series of amendments
WP.29/2022/13 | UN R78: Proposal for Supplement 1 to the 05 series of amendments
Discussion(s):
Working Party on Automated and Connected Vehicles | Session 11 | 27 Sep-1 Oct 2021

96. The expert from IMMA introduced GRVA-11-22, modifying ECE/TRANS/WP.29/GRVA/2021/26, with amendments to the stop lamp activation criteria He proposed that GRVA would harmonise stop lamp activation thresholds for regenerative braking in UN Regulation No. 78 with new provisions in UN Regulation No. 13-H.

97. The expert from Japan stated that the proposal can be supported. He noted however that automatically commanded braking was not considered in the current text of UN Regulation No. 78. He added that, if automatically commanded braking would be introduced in UN Regulation No. 78, then consistency between UN Regulation No. 78 and UN Regulation No. 13-H would be needed.

98. The expert from IMMA also presented ECE/TRANS/WP.29/GRVA/2021/27, proposing reference updates to standards that were recently revised.

99. GRVA adopted ECE/TRANS/WP.29/GRVA/2021/26 as amended by GRVA-11-22 (as reproduced in Annex V of the session report) and ECE/TRANS/WP.29/GRVA/2021/27. GRVA requested the secretariat to submit them as draft supplement to UN Regulation No. 78 to WP.29 and AC.1 for consideration and vote at their March 2022 sessions.