116. The expert from CLCCR recalled the purpose of ECE/TRANS/WP.29/GRVA/2023/3. He requested (GRVA-15-33), following discussions with OICA, to postpone the consideration of this topic to the next session of GRVA. GRVA gave its consent.

117. The expert from the United Kingdom of Great Britain and Northern Ireland introduced GRVA-15-08, with a proposal to amend Annex 18 of UN Regulation No. 13, aimed to align where appropriate the text in UN Regulation No. 13 with that of Annex 6 to UN Regulation No. 79 (Steering Systems) and to improve consistency in the interpretation of the requirements of that annex. Following discussions, GRVA requested the secretariat to distribute the document with an official symbol at its May 2023 session.

110. GRVA resumed discussions on the document tabled by CLCCR at the last session, jointly developed together with CLEPA and OICA (ECE/TRANS/WP.29/GRVA/2023/3). The expert from CLEPA informed GRVA that further discussions on definitions were needed, e.g. for threshold values and requirements. He requested to keep the document on the agenda until the next GRVA session as discussions on solutions and impacts on motor vehicles were still ongoing. GRVA agreed to this request.

94. The representative of CLEPA presented (GRVA-20-52) the status of their activities on e-axles for trailers and self-propelled trailers. He introduced an amendment proposal (GRVA-20-14) to UN Regulation No. 13 (superseding ECE/TRANS/WP.29/GRVA/2023/3). The representative of France supported the aim of the proposal but also warned about the safety risk in terms of stability posed by the trailer pushing the tractor vehicle. The representative of Denmark reported on trials of such technologies in his country and volunteered to join discussions on this topic. The representative of AAPC pointed to the German Federal Highway Research Institute publication on caravans or trailers with an electrically powered support axle, presented at the Working Party on General Safety Provisions (GRSG) in April 2024 (GRSG-127-01).
95. GRVA requested the secretariat to distribute GRVA-20-14 with an official symbol at the January 2025 session of GRVA.