GRVA-24-08
UN R13: Proposal for a Supplement to the 12, 13, 14 and 15 series of amendments

Proposal to clarify that the parking brake may be actuated while the vehicle is in motion via actuation of the vehicle’s service braking system by means of an auxiliary control which could be an Electronic Parking Brake (EPB) and to promote consistent interpretation of the activation conditions for an Emergency Stop Signal (ESS), including by application of the service braking system via the EPB control.

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Excerpts from session reports
GRVA | Session 23 | 22-25 Sep 2025

3. GRVA considered the provisional agenda prepared for its twenty-second session (ECE/TRANS/WP.29/GRVA/2025/38). GRVA adopted it as reproduced in informal document GRVA-23-02/Rev.1, which includes references to all informal documents received until 2 June 2025 and with the following additions: GRVA agreed to consider, under agenda item 8(c) ECE/TRANS/WP.29/GRVA/2025/45/Rev.1 and ECE/TRANS/WP.29/GRVA/2025/46/Rev.1 as well as ECE/TRANS/WP.29/GRVA/2025/48/Rev.1 under agenda item 6 (a). (All informal documents considered during the session are listed in Annex I of the session report. Annex II provides the list of Informal Working Groups (IWG) reporting to GRVA.)

GRVA | Session 24 | 19-23 Jan

77. The representative of OICA presented GRVA-24-08 proposing to align the provisions of UN Regulation No. 13 with those already approved by GRVA (ECE/TRANS/WP.29/GRVA/2025/45/Rev.1) for UN Regulation No. 13-H. GRVA requested the secretariat to submit it as draft supplements to the 12, 13 14 and 15 series of amendments to UN Regulation No. 13 to WP.29 and AC.1 for consideration and vote at their June 2026 sessions.