28. GRSP resumed discussion on two revised proposals tabled by the expert from France to clarify the direction of impact in the mechanical integrity test (ECE/TRANS/WP.29/GRSP/2023/16, as amended by GRSP-73-52-Rev.1, and ECE/TRANS/WP.29/GRSP/2023/23 as amended by GRSP-73-51-Rev.1). GRSP adopted ECE/TRANS/WP.29/GRSP/2023/16 and ECE/TRANS/WP.29/GRSP/2023/23, both as amended by annex VII to the session report. The secretariat was requested to submit the proposals as draft Supplement 5 to the 02 Series of Amendments (ECE/TRANS/WP.29/GRSP/2023/23) and as draft Supplement 3 to the 03 Series of Amendments (ECE/TRANS/WP.29/GRSP/2023/16) to UN Regulation No. 100 for consideration and vote at the November 2023 sessions of WP.29 and AC.1.