34. The representative from OICA introduced ECE/TRANS/WP.29/GRPE/2022/4 proposing to align UN Regulation No. 24 with UN Regulation No. 85 and ISO 1585:2020. The representatives from France, Germany, Italy, Sweden and the UK supported the proposal.

35. GRPE adopted ECE/TRANS/WP.29/GRPE/2022/4 and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2022 sessions as draft Supplement 8 to the 03 series of amendments to UN Regulation No. 24 (Visible pollutants, measurement of power of C.I. engines (Diesel smoke)).

36. The representative from OICA introduced ECE/TRANS/WP.29/GRPE/2022/5 and GRPE-85-11 proposing to align UN Regulation No. 85 with ISO 1585:2020. The representative from the UK proposed alternative wording to clarify the proposed provisions, as amended during the session and reflected in Annex V of the session report.

37. GRPE adopted Annex V and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2022 sessions as draft Supplement 11 to UN Regulation No. 85 (Measurement of the net power and the 30 min. power).

38. The representative from OICA introduced GRPE-85-23 and GRPE-85-24 proposing to widen test fuel specifications to local requirement in UN Regulations Nos. 24 and 85. The representative from the UK suggested the wording of the proposed amendment could be clarified. GRPE agreed to consider a revised proposal at forthcoming session of GRPE.

39. The representative from OICA introduced GRPE-85-25 proposing to add hydrogen fuel and associated specifications in UN Regulation No. 85. The representative from AAPC requested more information about the time when market fuel specifications would be determined, whether at type approval or at the time of the test. The representative from OICA clarified that fuel specifications would be determined at the time of the test.

40. The representative from the EC asked whether it should be Grade I or Grade II hydrogen as specified in GRPE-85-28; moreover, he informed GRPE that there is no reference to ISO 14687 in UN Regulation No. 154 that already covers hydrogen. The Chair proposed to resume the discussions on this item at the next session of GRPE. GRPE supported that proposal.