21. The representative of ETRTO introduced ECE/TRANS/WP.29/GRBP/2026/6, as amended by GRBP-83-20-Rev.2. Concerns on transitional provisions, raised by the representative of Germany, were solved in GRBP-83-20-Rev.2. GRBP adopted the content of GRBP-83-20-Rev.2 and decided to leave it pending until all other proposals to amend the 04 series of amendments to UN Regulation No. 117 were discussed.

23. During the second part of the 83rd session of GRBP held on 17 March (see agenda item 5(g) below), the representative of ETRTO introduced GRBP-83-48-Rev.1, compiling all agreed proposals amending the 04 series of amendments to UN Regulation No. 117.

24. GRBP adopted GRBP-83-48-Rev.1 and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at the June 2026 sessions as draft Supplement 4 to the 04 series of amendments to UN Regulation No. 117.