16. The expert from OICA introduced ECE/TRANS/WP.29/GRSP/2015/26, proposing alternative possibilities to ensure adequate protection against accidental opening of the back door while the vehicle was in motion. GRSP adopted the proposal not amended. The secretariat was requested to submit ECE/TRANS/WP.29/GRSP/2015/26 to WP.29 and AC.1, for consideration and vote at their June 2016 sessions as draft Supplement 4 to the 03 series and as draft Supplement 1 to the 04 series of amendments to UN Regulation No. 11.