14. The Chair of the IWG on WLTP reported on the progress made by the group in Phase 1B of the development of UN GTR No. 15 (GRPE-71-24). He highlighted some key issues which were still under discussion such as the number of tests to confirm the declared value for CO2 which may require a political decision at the next GRPE session. He also highlighted the problems related to cross references to private standards in regulations.

15. The drafting manager of the IWG on WLTP introduced GRPE-71-25 and GRPE-71-26 containing all confirmed items for the time being on the amendments to UN GTR No. 15 as a result of the activities under Phase 1B.

16. The Chair of GRPE recalled the importance of harmonization and encouraged all Contracting Parties involved to find a compromise solution on remaining open issues such as the number of tests. The secretariat informed GRPE that a representative of the Society of Automotive Engineers (SAE) may attend the June 2015 session of WP.29 to discuss their position on cross references to private standards in regulations. GRPE noted the intention of the IWG on WLTP to submit an official document proposing amendments to UN GTR No. 15, corresponding to the mandate of Phase 1B, at the next GRPE session after the meeting of the IWG in Tokyo in September 2015.