GAR | GRVA-23

GRVA/23 Automated/Connected Vehicles: Report of the 23rd (September 2025) session

UNECE: .pdf | .docx GAR: .pdf | .docx

8. (c) Clarifications

58. The representative of CLEPA recalled the purpose of their proposal for amendments to UN Regulation No. 13 (ECE/TRANS/WP.29/GRVA/2025/34) aimed at allowing for the type-approval of park-locks and presented a revised proposal (see GRVA-23-07/Rev.2). Several delegations noted that this proposal addressed their concerns expressed at previous session. CLEPA clarified that the test for PTI was not part of that proposal and that it would be addressed at European level. The secretariat invited the experts to look at UN Rule 2 adopted under the 1997 Agreement, aligned with the corresponding European Union (EU) directive in force in the EU. CITA confirmed that Park-lock was on the agenda of the IWG on PTI and that this could be considered.

59. GRVA adopted the proposal (see Annex VI of the session report) and requested the secretariat to submit it as draft Supplement 3 to the 14 series of amendments to UN Regulation No. 13 (Heavy vehicle braking) to WP.29 and AC.1 for consideration and vote at their March 2026 sessions.

60. GRVA resumed consideration of the OICA proposal concerning the possibility to generate the Emergency Stop Signal (ESS) via the Electronic Parking Brake (EPB) control. The delegations noted the potential necessity to revisit the definition of EPB. GRVA adopted ECE/TRANS/WP.29/GRVA/2025/45/Rev.1 and requested the secretariat to submit it as draft supplements to the 01 and the 02 series of amendments to UN Regulation No. 13-H to WP.29 and AC.1 for consideration and vote at their March 2026 sessions.

61. The representative of OICA introduced (GRVA-23-42) a proposal for amendments to UN Regulation No. 13 aimed at clarifying the testing provisions for the effectiveness of the secondary braking system in failure conditions. GRVA adopted ECE/TRANS/WP.29/GRVA/2025/46/Rev.1 and 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 March 2026 sessions.

62. The representative of CLEPA recalled the purpose of document ECE/TRANS/WP.29/GRVA/2025/15 and presented (GRVA-23-41) a revised proposal focusing on the approval the dynamo function for e-trailers. GRVA agreed with the suggestion of the representative of Japan to document the GRVA understanding that e-trailers capable of self-propulsion should not be disguised ADS trucks without drivers; GRVA clarified that the e-trailer definition was in the Resolution R.E.3 supported that understanding.

63. GRVA adopted GRVA-23-11/Rev.2 (subject to final verification in January 2026) and requested the secretariat to submit it as draft supplements to the 12, 13, 14 series of amendments to UN Regulation No. 13 (and be incorporated in the draft new 15 series) to WP.29 and AC.1 for consideration and vote at their March 2026 sessions. The Secretary informed GRVA that he had received questions from the Vice-Chair of the Working Party on the Transport of Perishable Foodstuffs (WP.11) concerning the frequency, the tension and the intensity of the electricity generated by the dynamo function.