13. GRSP noted GRSP-73-07 that complements the proposal on safety-belt anchorages (paragraph 10) and removes derogations for two-point safety-belts on buses and coaches. GRSP agreed to resume discussion at its December 2023 session based on a revised proposal and requested its experts to provide further statistical data. GRSP noted that if a new replacement proposal was not received by the secretariat, GRSP-73-07 should be confirmed for submission as an official document before the deadline.

14. The expert from Japan outlined (with GRSP-73-29) the development of his proposal (GRSP-73-28-Rev.1 superseding ECE/TRANS/WP.29/GRSP/2022/3) to limit the slack of the safety-belt buckle in rear seats to improve occupant safety. He said that the group of interested experts had met twice and had agreed to further testing of: (a) the test method of the buckle strap assembly and of (b) the test of the effect of the pre-tensioner on the forward movement of the rear seat occupant. GRSP agreed to resume discussion at its December 2023 session based on a revised document. GRSP experts were requested to provide comments to the expert from Japan on GRSP-73-28-Rev.1, who would submit a revised official proposal by the deadline.

15. GRSP resumed discussion on ECE/TRANS/WP.29/GRSP/2022/12 that introduces an optional test procedure for frontal airbags in combination with rearward-facing child restraint systems in the rear seat. The experts from Italy and Sweden expressed concerns on possible misuse introduced by the proposal. Finally, the expert from OICA withdrew the proposal due to the lack of support from GRSP.

16. The expert from the Netherlands presented the status report of the Ad Hoc Group on CRS (GRSP-73-15) as an introduction to GRSP-73-16-Rev.2 (superseding ECE/TRANS/WP.29/GRSP/2023/9), which allows the use of Lower Tether Anchorages (LTA) as anti-rotation devices. He added that the proposal would not mandate the use of LTA, but would ensure that use be unambiguous, and that users be informed correctly. He also explained that the proposal would be accompanied by parallel proposals to UN Regulations Nos. 129 and 145. The expert from OICA introduced GRSP-73-24 to provide consistency on transitional provisions with other proposals of amendments to the UN Regulation. GRSP adopted ECE/TRANS/WP.29/GRSP/2023/9, as amended by annex III to the session report. GRSP requested the secretariat to submit the proposal as the draft 09 Series of Amendments to UN Regulation No. 16 for consideration and vote at the November 2023 sessions of WP.29 and AC.1.

17. The expert from Spain introduced ECE/TRANS/WP.29/GRSP/2023/3, complementing her proposal of three-point safety-belts for buses and coaches (M2 and M3 vehicle categories of all classes) on adult seats facing built-in CRS (paragraph 11). GRSP adopted ECE/TRANS/WP.29/GRSP/2023/3, as amended below, and requested the secretariat to submit the proposal as draft Supplement 5 to the 08 Series of Amendments and to include it in the draft (paragraph 16) 09 Series of Amendments to UN Regulation No. 16 for consideration and vote at the November 2023 sessions of WP.29 and AC.1.

The title, amend to read:

“Proposal for Supplement 5 to 08 Series of Amendments and 09 Series of Amendments to UN Regulation No. 16 (Safety-belts)”*

^*Note by the secretariat: The change of the title was agreed with the author of the proposal to include the text of the draft Supplement 5 to the 08 Series of Amendments into the draft 09 Series of Amendments to UN Regulation No. 16.

18. The expert from CLEPA introduced ECE/TRANS/WP.29/GRSP/2023/15, proposing a text to prevent the approval mark from being replaced by a Unique Identifier (UI) in UN Regulation No. 16. GRSP adopted ECE/TRANS/WP.29/GRSP/2023/15, as amended below, and requested the secretariat to submit the proposal as part of (see paragraph 17) draft Supplement 5 to the 08 series of amendments and to include it in (paragraphs 16 and 17) the draft 09 Series of Amendments to UN Regulation No. 16 for consideration and vote at the November 2023 sessions of WP.29 and AC.1.

The title, amend to read:

“Proposal for Supplement 5 to 08 Series of Amendments and 09 Series of Amendments to UN Regulation No. 16 (Safety-belts)” *

^*Note by the secretariat: The change of the title was agreed with the author of the proposal to include the text of the draft Supplement 5 to the 08 Series of Amendments into the draft 09 Series of Amendments to UN Regulation No. 16.

19. The expert from the Republic of Korea introduced the status report (GRSP-73-43) of the Ad Hoc Group on Safety-Belt Reminders (SBR). He informed GRSP that the Group agreed to clarify and resolve three SBR issues introduced at the seventy-second session of GRSP (GRSP-72-13). He concluded that the Group planned to convene virtually at the end of May to seek basis for a proposal for discussion at the December 2023 session of GRSP. The expert from France introduced ECE/TRANS/WP.29/GRSP/2023/17, to clarify: (a) how to assess SBR connection in the case of removable seats and (b) test procedure of SBR. The expert from OICA reiterated that GRSP-73-24 also amends ECE/TRANS/WP.29/GRSP/2023/17. GRSP adopted ECE/TRANS/WP.29/GRSP/2023/17 as amended by annex III to the session report. GRSP requested the secretariat to submit the proposal as part of the draft 09 Series of Amendments (paragraphs 17 to 19) to UN Regulation No. 16 for consideration and vote at the November 2023 sessions of WP.29 and AC.1.

20. The expert from CLEPA introduced GRSP-73-56 to propose a fundamental restructuring of UN Regulation No. 16 and to start this activity with a group of interested experts led by the expert from the Netherlands. The expert from Japan, Ambassador of IWVTA, suggested informing IWVTA IWG about a possible splitting of the UN Regulation and its effect on UN Regulation No. 0. GRSP agreed in principle with the proposal, pending feedback from IWVTA IWG at its June 2023 session, and requested the secretariat, on behalf of the expert from the Netherlands to email all GRSP experts to query their availability for this activity.