32. The expert from Spain, as Chair of the Informal Working Group on Safer Transport of Children in Buses and Coaches (IWG-STCBC), presented a status report of the IWG (informal document GRSP-77-19) and a draft for a proposal of a 01 series of amendments to UN Regulation No. 170 (informal document GRSP-77-20). After weighing the advantages and disadvantages, the IWG had decided to include the changes in a new series of amendments. Following the feedback from GRSP, the expert from Spain announced the intention of the IWG to submit a final version of the proposal as a working document to the next GRSP session.

37. The expert from Spain presented informal document GRSP-78-03-Rev.1 with the status report of the IWG on Safer Transport of Children in Buses and Coaches (IWG-STCBC). The group had achieved its objectives and concluded its work with the submission this session of a proposal (ECE/TRANS/WP.29/GRSP/2025/10) for phase 2 of UN Regulation No. 170 which would allow the use of Child Restraint Systems approved according to UN Regulations Nos. 129 or 44 in bus seats with 2-point belts. She proposed that a task force would continue work on a number of issues identified by IWG-STCBC and develop amendments to UN Regulations Nos. 16, 107 and 173. GRSP agreed with this approach.

38. The expert from Spain then presented the proposal in working document ECE/TRANS/WP.29/GRSP/2025/10. The expert from Italy suggested to modify a date in the transitional provisions and the expert from the Kingdom of the Netherlands suggested to specify a fixed revision of standard ISO 6487. The expert from Spain submitted a revised proposal (informal document GRSP-78-46) taking into account the feedback received and also aligning with the revised proposal to amend UN Regulation No. 129 regarding small shoulder heights (see paragraph 34 and informal document GRSP-78-47-Rev.1). GRSP thanked IWG-STCBC for successfully concluding the work they had been assigned and adopted informal document GRSP-78-46, as amended (as reproduced in annex VIII) and requested the secretariat to submit it as a proposal for a 01 series of amendments to UN Regulation No. 170 to the June 2026 sessions of WP.29 and AC.1.