5. Concerning the updating of the requirements on the noise test track from ISO 10844:1994 to ISO 10844:2011, GRB agreed on aligning the UN Regulation with the decision taken for UN Regulation No. 117 on this subject (superseding ECE/TRANS/WP.29/GRB/2012/16) (see also paras. 16 and 17). Accordingly, the expert from OICA withdrew GRB-57-20 and it was agreed to keep ECE/TRANS/WP.29/GRB/2012/16 for reference. Finally, GRB agreed to defer discussion at its September 2013 session on the basis of a revised consolidated proposal of 03 series of amendments to the UN Regulation (ECE/TRANS/WP.29/GRB/2012/8) including a new proposal for transitional provisions (GRB-57-17), ECE/TRANS/WP.29/GRB/2012/17 and the provisions of Supplement 8 to the 02 series of amendments (see para. 10).