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.