9. The expert of IWG SLR tabled proposals that clarified and corrected the text of various series of amendments to UN Regulation Nos. 148 and 150 (ECE/TRANS/WP.29/GRE/2023/14 and ECE/TRANS/WP.29/GRE/2023/16, respectively). GRE adopted these proposals and requested the secretariat to submit them for consideration and vote at the March 2024 sessions of WP.29 and AC.1 as draft Supplement 2 to the 01 series of amendments to UN Regulation No. 148, draft Supplement 6 to the 00 series of amendments and draft Supplement 2 to the 01 series of amendments to UN Regulation No. 150.

16. The experts from GTB proposed to improve the definition of photometric stability. The proposal was accompanied by an amendment to the 01 series of amendments to UN Regulation No. 148 (ECE/TRANS/WP.29/GRE/2023/20). GRE adopted the proposals and requested the secretariat to submit them for consideration and vote at the March 2024 sessions of WP.29 and AC.1 as part of draft Supplement 5 to the 08 series of amendments and part of the draft new 09 series of amendments to UN Regulation No. 48, as well as part of draft Supplement 2 to the 01 series of amendments to UN Regulation No. 148.