9. The expert from Switzerland introduced an analysis of the Swiss database based on vehicle noise tests (GRB-57-23) conducted in conformity to the 02 series of amendments to the UN Regulation and on limit values proposed by the experts from Germany, Japan and EC. GRB agreed to resume discussion on this subject at its September 2013 session and recommended experts to provide detailed comments.

10. GRB agreed to establish a group of interested experts on vehicle noise, led by the expert from EC, with the main goal of (i) finalizing a common proposal on vehicle classification (including subcategories) and (ii) update a proposal of 03 series of amendments to UN Regulation No. 51 aiming at maintaining consistency with the EU legislation proposal. The schedule of the first meeting of the group was agreed for 19 April 2013, tentatively in Brussels. Finally, GRB agreed to keep as reference in the agenda of the next session informal documents GRB-54-03, GRB-57-07, GRB-57-19 and GRB-57-23 and to resume discussion on the basis of the outcome of the meeting of the group of interested experts.