22. The Chair of GRPE recalled the decision of WP.29 to defer the vote of the Executive Committee of the 1998 Agreement (AC.3) on ECE/TRANS/WP.29/2014/84 and ECE/TRANS/WP.29/2014/85 at its March 2015 session.

23. The expert from the USA presented GRPE-70-15 reporting on the activities of his Country on a correlation study comparing results obtained according to Annex 9 and those obtained according to Annex 10 (in ECE/TRANS/WP.29/2014/84). He offered to share the outcome of this study with GRPE in June 2015. GRPE welcomed this offer and agreed to further exchange information on the emissions of heavy duty vehicles equipped with hybrid powertrains and their environmental performance evaluation.

42. The Chair of the IWG on VPSD informed GRPE about the outcome of the fifth session of the group. He presented (GRPE-70-21) proposing a new Mutual Resolution (M.R.2) containing an explanatory chapter and a chapter with vehicle propulsion system definitions. The proposal received some comments. GRPE requested the secretariat to distribute GRPE-70-21 with an official symbol at its June 2015 session.

43. The Chair of the IWG on GFV proposed to insert in the VPSD outcome the definitions that would emerge from his group on dual fuelled vehicles.

44. GRPE agreed to defer consideration of GRPE-70-18.

45. GRPE acknowledged the progress made by the group and noted that no meeting would be scheduled during the GRPE week in June 2015.

[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.