18. The expert from the Russian Federation presented GRB-52-10 proposing a clarification to the test procedure for measuring the tyre rolling resistance. The expert from ISO informed GRB that this issue was still under discussion within a working group of his organization. GRB agreed to resume consideration of this subject at its next session, if necessary.

19. The expert from ETRTO proposed a correction to the formula for the measurement reproducibility of rolling resistance GRB-52-05. GRB noted a number of comments and agreed to review the proposal at its next session in February 2011, on the basis of an updated official document to be submitted by the expert from ETRTO.

20. GRB noted that Revision 2 of Regulation No. 117 (including the 02 series of amendments) had been adopted by WP.29 at its June 2010 session, on the basis of document ECE/TRANS/WP.29/2010/63. The expert from EC introduced ECE/TRANS/WP.29/GRB/2010/8 proposing a number of corrections to Revision 2.

21. Following the discussion, GRB adopted the amendments proposed on pages 2 and 3 of ECE/TRANS/WP.29/GRB/2010/8, as amended below, and requested the secretariat to submit them to WP.29 and AC.1, as Corrigendum 1 to 02 series of amendments to Regulation No. 117, for consideration at their November 2010 sessions (see ECE/TRANS/WP.29/2010/146). Annex 7, footnote 1/ of paragraphs 2. and 3.1.1., amend “Refer to the appendix …” to read “See appendix …”.

22. Upon the recommendation of WP.29 (ECE/TRANS/WP.29/1085, para. 50) at its June 2010 session, GRB considered an updated version of Annexes 8 and 9 (ECE/TRANS/WP.29/GRB/2010/8) for labelling purposes of tyres regarding rolling resistance as an outcome of the informal group on Special Tyre Definitions (STD). GRB noted GRB-52-06 and a number of comments, but could not find an agreement on both annexes. Following the discussion, it was agreed to reproduce the additional provisions on rolling resistance complementing the 02 series of amendments to Regulation No. 117 as Annex III to this report (see the Documentation tab to download the full report).