The 8th Task Force UN R173 meeting, held 18 May 2026 from 14:30h–16:30h CET via TEAMS, covered welcome and meeting arrangements, adoption of the agenda, amendment to UN R107, amendment to UN R173, and amendment to UN R145, with discussion of the next meeting.

Proposal to insert new definitions for Child Restraint System, ISOFIX position, and i-Size seating position, insert new para. 7.7.8.7 requiring pictograms for ISOFIX-seating positions, i-Size-seating positions, and rearward-facing passenger seats, insert new paras. 10.42 to 10.42.7 establishing transitional provisions with entry into force from the official date, mandatory application from 1 September 2030, and acceptance of prior series until 1 September 2032, and add new figures 33, 34, and 35 to Annex 4 specifying pictogram requirements.

Proposal to amend para. 2.27. to define ISOFIX position as a position satisfying requirements of UN R145 to allow installation of ISOFIX child restraint systems as defined in UN R44 and UN R129, amend para. 2.36. to define i-Size seating position as a seating position satisfying requirements of UN R145 to allow installation of i-Size child restraint systems as defined in UN R129, insert new para. 2.48. defining minimum effective seat belt length, insert new para. 5.1.11. specifying minimum seat belt lengths for M₂ and M₃ vehicles, amend para. 5.2.1. to establish requirements for seating positions of M₁, M₂, M₃ and N₁ vehicles suitable for various child restraint systems and require M₁ vehicles to provide child restraint system installation information, amend para. 5.2.2. to remove reference to manufacturer recommendation, insert new para. 11.3. establishing transitional provisions applicable from the official entry into force date and from 1 September 2030, and insert new Annex 8 specifying measurement methodology for minimum effective seat belt length.

Proposal to amend para. 2.9. to redefine ISOFIX position as a position that satisfies the requirements of this Regulation to allow the installation of ISOFIX child restraint systems as defined in UN Regulation No. 44 and UN Regulation No. 129, amend para. 2.24. to redefine i-Size seating position as a seating position that satisfies the requirements defined in this Regulation to allow the installation of i-Size child restraint systems as defined in UN Regulation No. 129, amend para. 5.2.2.7. to state that the requirements of para. 5.2.2.6. do not apply to the i-Size seating position and to low ISOFIX anchorages installed in vehicles of category M₂ or M₃, and amend para. 5.2.4.1. to provide that marking requirements do not apply to vehicles of category M₂ and M₃.