39. The representative from OICA introduced GRPE-86-25 as an update about the inclusion of hydrogen as a fuel in UN Regulations No. 49 and 85 and informed GRPE that the consideration of ECE/TRANS/WP.29/GRPE/2022/21 would be postponed until the next session of GRPE. GRPE agreed to postpone the consideration of this issue to forthcoming sessions 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.