27. GRB resumed consideration on ECE/TRANS/WP.29/GRB/2013/9 tabled by the expert from the Russian Federation. The expert from IMMA requested a study reservation on paragraph 8.8.21.2. including new categories of vehicles L6 and L7 not yet covered by UN Regulation No. 9. GRB agreed to resume consideration on this subject at its January 2014 session and for possible adoption of the proposal as a whole. Moreover, it was agreed to remove ECE/TRANS/WP.29/GRB/2012/12 and GRB-57-10 and GRB-57-11 from the agenda of the next meeting, awaiting possible new information from the ISO expert and revised proposals, if any.