35. Under agenda item 7 (see paragraph 22), the expert from OICA introduced GRSP-72-30 to harmonize already existing provisions on hydrogen fuelled vehicles of UN Regulation No. 135 to the provisions of UN GTR No. 13, Amendment 1. GRSP requested its experts to provide feedback on GRSP-72-30 to the expert from OICA before the deadline for submission of official documents for its May 2023 session.