33. The expert from CLEPA introduced ECE/TRANS/WP.29/GRSG/2010/25 allowing the use of the Liquid Petroleum Gas (LPG) heater of a trailer while it is in motion. GRSG noted a number of comments from the experts, in particular, on the requirements that should apply to trailers in Annex 8 of the Regulation. GRSG agreed to resume consideration of this subject at its next session on the basis of a revised proposal prepared by the expert from CLEPA.