27. The World Forum recalled the oral report of the Chair of GRPE given during the 163rd session (ECE/TRANS/WP.29/1110, paras. 32-36) and approved the report.

[Vote postponed until the March session. The GTR allows option between semi-validated HILS and fully validated power pack methods. US EPA believes there must be a robust understanding of the correlation between the two methods and the testing to build this understanding is incomplete. Therefore, while the US is committed to the GTR amendment, the US requests a delay. Canada and Japan support this request and need for the additional data.]

109. The representative of the United States of America kindly requested AC.3 to postpone consideration of draft Amendment 3 to UN GTR No. 4 (ECE/TRANS/WP.29/ 2014/84, ECE/TRANS/WP.29/2014/85 and the authorization to develop a corresponding amendment (ECE/TRANS/WP.29/AC.3/29)) because his country was still performing tests on the potential differences between the two alternatives in the proposed Annexes 9 and 10 and on their implications. He added that the test results would probably be shared with the other Contracting Parties at the January 2015 session of GRPE. The Chair noted that another Contracting Party also requested a delay in the vote until their clearance process had been completed. The Contracting Parties welcomed the statements and agreed to postpone consideration of the amendment and the vote by AC.3 to the March 2015 session.