40. The expert from France, Chair of the IWG on Enhanced Child Restraint Systems (ECRS), introduced a presentation (GRSP-58-22) on the work progress of the IWG and introducing the proposal on the 01 and 02 series of amendments to the UN Regulation. He explained that the main content of the draft 01 series of amendments introduced: (i) some corrections to the original version of the UN Regulation, (ii) the concept of non-integral CRS and (iii) type approval provisions, including arrangements of the approval mark, for modules (GRSP-58-07-Rev.1 superseding ECE/TRANS/WP.29/GRSP/2015/24). He explained that the 02 series of amendments represented Phase 2 of the UN Regulation introducing provisions (GRSP-58-08 superseding ECE/TRANS/WP.29/GRSP/2015/31) for booster seats with backrest. GRSP adopted ECE/TRANS/WP.29/GRSP/2015/24, as amended by Annex IV to this report. The secretariat was requested to submit it to WP.29 and AC.1, for consideration and vote at their June 2016 sessions as draft 01 series of amendments to UN Regulation No. 129. Finally GRSP agreed to resume consideration on the Phase 2 of the UN Regulation at its May 2016 session and requested the secretariat to distribute GRSP-58-08 with an official symbol for that session.

29. The expert from France, Chair of the IWG on Enhanced Child Restraint Systems (ECRS), introduced a presentation (GRSP-57-22) to show the work progress of the IWG and the main content of draft 01 series of amendments incorporating provisions for booster seats (GRSP-57-20 and GRSP-57-21 superseding ECE/TRANS/WP.29/GRSP/2015/9). He added that for Phase II of the UN Regulation there were still some pending issues such as safety for children in cars on booster cushions without a backrest and geometric definition of the test fixture (gabarit) for booster seats with an integrated backrest. The expert from Germany suggested only the inclusion of booster cushions with backrests in UN Regulation No. 129, while provisions for other kind of boosters should remain for the time being in UN Regulation No. 44 pending a whole revision of this last UN Regulation. The expert from EC endorsed the work of the IWG and he proposed further promotion of the of i-size concept to allow the installation of three ECRS on the same row seat in larger family cars. GRSP agreed to resume discussion at its December 2015 session on this subject awaiting the outcome of the IWG and requested to distribute GRSP-57-20 with an official symbol.