8. The expert from Germany re-introduced ECE/TRANS/WP.29/GRSP/2024/6 to clarify how to perform the buckle-opening test, simulating the load caused by a 60 kg body, described in paragraph 7.8. of the UN Regulation. The expert from the Kingdom of the Netherlands updated the proposal (informal document GRSP-76-48-Rev.1) with the specifications of the three-dimensional “H” (3-D “H”)-point machine which had been updated and transferred from the Consolidated Resolution on the Construction of Vehicles (R.E.3) to Mutual Resolution No.1 (M.R.1). Moreover, informal document GRSP-76-48-Rev.1 included the modifications that were introduced by supplement 1 to the 09 series of amendments to UN Regulation No. 16 (ECE/TRANS/WP.29/2024/124). GRSP adopted ECE/TRANS/WP.29/GRSP/2024/6, as amended by annex III to this report and requested the secretariat to submit it as a proposal for Supplement 1 to the 10 Series of Amendments of UN Regulation No. 16 (Safety-belts) to the June 2025 sessions of WP.29 and the Administrative Committee of the 1958 Agreement (AC.1).

13. The expert from the Republic of Korea, Chair of the ad-hoc group on seat-belt reminders (SBR), introduced GRSP-75-12 to explain that were different interpretations to be solved on SBR activation when the safety-belts was unfastened. The expert from Spain argued that current provisions in the UN Regulation need changes. Furthermore, the expert from the Republic of Korea introduced ECE/TRANS/WP.29/GRSP/2024/2 to clarify the text of the UN Regulation. GRSP also noted ECE/TRANS/WP.29/GRSP/2024/6, tabled by the expert from Germany to clarify the buckle-opening test. GRSP endorsed in principle this last proposal. GRSP finally agreed to resume consideration on ECE/TRANS/WP.29/GRSP/2024/2, ECE/TRANS/WP.29/GRSP/2024/6 and ECE/TRANS/WP.29/GRSP/2023/32 (see ECE/TRANS/WP.29/GRSP/74, paragraph 19) at the December 2024 session of GRSP. The experts from Germany, Japan and the Republic of Korea were requested to adapt their respective proposals to the new adopted UN Regulations and to the 10 series of amendments to UN Regulation No. 16 (see paragraph 12 above).