32. The expert from France introduced ECE/TRANS/WP.29/GRSP/2022/15, to clarify the procedure and the characteristics of the measuring device used for the compliance test for the vehicle exhaust system. Moreover, she explained that the proposal was based on the ongoing work of UN GTR No. 13, Phase 2. GRSP adopted ECE/TRANS/WP.29/GRSP/2022/15, not amended. The secretariat was requested to submit the proposals as draft Supplement 5 to the original version and Supplement 2 to the 01 series of UN Regulation No. 134 (Hydrogen and Fuel Cells Vehicles) for consideration and vote at the June 2023 sessions of WP.29 and AC.1.

33. The secretary of the Task Force to transpose Amendment 1 of UN GTR No. 13 into UN Regulation No. 134, introduced GRSP-72-17. GRSP noted that material compatibility, the remote Thermal Pressure Relief Device (TPRD), conformity of production and other elements proposed by GRSP-72-17 were still under discussion in the Task Force.

34. GRSP agreed to resume consideration on the transposition of UN GTR No. 13, Phase 2 into UN Regulation No. 134 on a reviewed proposal drafted by the Task Force at its May 2023 session. The proposal was expected to be submitted as an official document by 20 February 2023.