8. GRSP considered GRSP-73-23-Rev.1 on methods to shorten the verification test time for the expected on-road performance and performance durability of Compressed Hydrogen Storage Systems. GRSP also noted GRSP-73-38, on the post-crash safety of hydrogen-fuelled heavy-duty vehicles (HDV). It was agreed to resume discussion at the December 2023 session of GRSP as topics for Phase 3 of the UN GTR.