The agenda includes feedback from the June GRSP session on the submitted draft UN Regulation, next progression of work for light vehicle drafting and consideration of a September face-to-face meeting.

UN IWG CLIV presented a draft UN R regulation proposal for buses at May UN GRSP session covering physical inspection system with no sensing required. Discussions on light vehicle regulation, paused since early 2026, can now resume. Light vehicles will have sensing related performance requirements. ISO CPD surrogates availability will be crucial to implement the regulation. UN IWG CLIV will hold a 4-day workshop from 08–11 September, likely at UTAC/France, focusing on light vehicles, welcoming ISO CPD expert participation and presentations on ISO CPD status and test tools.

The 18th session of the Children Left in Vehicles Informal Working Group convened online on 25 June 2026. Feedback from GRSP on the draft UN Regulation for buses and coaches was positive, with a 10 July submission deadline for further comments. Australia will circulate a preliminary draft UN Regulation for light vehicles to Vice-Chairs before the September face-to-face meeting in Paris. The bus UN Regulation will initially include only Physical Inspection Systems, while light vehicle discussions will address indirect, indirect-plus, or direct sensing systems. A trilateral meeting between Australia, the United States, and Canada made constructive progress on Global Technical Regulation development, with potential for a November WP.29 vote.