| GRSP/2023/19 | UN R135: Proposal for Supplement 1 to the 02 series of amendments | |
| GRSP/2023/24 | UN R135: Proposal for Supplement 3 to the Original Version and Supplement 4 to the 01 series of amendments |
GRSP agreed to resume discussion on two documents tabled by the expert from OICA to incorporate provisions on hydrogen fuelled vehicles into UN Regulation No. 135, to harmonize this UN Regulation with UN GTR No. 13, Amendment 1 (ECE/TRANS/WP.29/GRSP/2023/19 and ECE/TRANS/WP.29/GRSP/2023/24).
| GRSP-73-32 | UN R135: Proposal for Supplement 3 to the Original Version and Supplement 4 to the 01 Series of Amendments | |
| GRSP-73-33 | UN R135: Proposal for Supplement 2 to the 02 Series of Amendments | |
| GRSP-73-32 | UN R135: Proposal for Supplement 3 to the Original Version and Supplement 4 to the 01 Series of Amendments |