Outcomes pursuant to Day 1 of the CLIV IWG session.

Outcomes pursuant to Day 2 of the CLIV IWG session.

Draft text pursuant to the third day of the CLIV informal group 15th session.

Draft text after Day 4 of the informal group session.

Proposal to establish uniform provisions for approval of vehicles of categories M₂ or M₃ designed or equipped primarily for carriage of children, requiring physical inspection systems to prevent child occupants being left inside buses and coaches after journey completion. Physical inspection systems shall be engaged when vehicle master control switch is turned off and disarmed via inspection confirmation device located behind rearmost seat. Systems must generate external visual and audible warnings within specified timeframes if not disarmed, with warnings cycling for at least 10 minutes at greater than 60 dB(A) unless system is disarmed or vehicle master control switch is turned on.

The CLIV informal group held its 15th session in Seoul from 24–27 March 2026, focusing on drafting performance requirements for buses and coaches. Japan proposed a five-minute inspection duration for drivers to confirm all children have disembarked; however, OICA suggested linking inspection time to passenger capacity. On Day 3, Japan presented a revised position: buses with 25 or more passenger seats require five minutes before a CLIV warning event occurs, while buses with fewer than 25 passenger seats require three minutes. All delegates supported this approach. The IWG agreed to draft papers for submission to affected GRs concerning external audible and visual warning signal proposals and intends to submit the draft UN Regulation to GRSP for informal consideration at the June 2026 GRSP session.