7. The Chair of the IWG on the Worldwide harmonized Light vehicles Test Procedure (WLTP) reported on the ongoing Phase 2 activities under each of the task forces (GRPE-75-20). He anticipated that the IWG on WLTP may need some additional time to finalize all Phase 2 activities due to the complex and heavy workload to be carried out; he mentioned that GRPE will be informed accordingly in the following sessions. He requested guidance from GRPE on the preferred approach for WLTP construction either in a single UN global technical regulation (GTR) or separate GTRs.

8. The experts from EC and India expressed their preference to use separate GTRs in order to give more flexibility to Contracting Parties to the 1998 Agreement when transposing into national/regional legislation.

9. GRPE agreed on the general principle to have several GTRs in the framework of WLTP so that the 1998 Agreement is more attractive, and to then attempt to combine those GTRs when WLTP is transposed into Regulations under the 1958 Agreement.

10. The drafting coordinator of the IWG on WLTP presented ECE/TRANS/WP.29/GRPE/2017/9 on amendments to GTR No. 15 on WLTP. He also presented GRPE-75-22 introducing some changes to ECE/TRANS/WP.29/GRPE/2017/9 and he referred to GRPE-75-23 as a consolidated version of both documents. He introduced GRPE-75-07 as technical report on the development of such amendments to GTR No. 15.

11. GRPE adopted ECE/TRANS/WP.29/GRPE/2017/9 as amended by Annex IV to the session report and requested the secretariat to submit it to WP.29 and the Executive Committee of the 1998 Agreement (AC.3) for consideration and vote at their November 2017 sessions as draft Amendment 3 to GTR No. 15 on WLTP. GRPE also adopted the technical report (GRPE-75-07) as reproduced in Annex V to this report and requested the secretariat to submit it to WP.29 and AC.3 for consideration and vote at their November 2017 sessions.

12. As leader of the task force on evaporative emissions, the expert from Japan introduced GRPE-75-16 on a first draft of amendments to the new GTR on evaporative emission test procedure for WLTP (WLTP EVAP). She expressed the intention of the IWG on WLTP to continue working on the proposal to submit an official document together with a technical report for consideration at the next GRPE session in January 2018.

13. As leader of the task force on the transposition of WLTP into the 1958 Agreement, the expert from EC presented GRPE-75-18 on an alternative transposition route. He explained that the idea of a new Regulation on WLTP (Type 1 and Type 4 tests) including regional levels and the most stringent level (Level 2, which would be the only one subject to mutual recognition) remained the same as agreed in the past. He proposed to change the original plan to develop a second new Regulation for other tests beyond Types 1 and 4 and to use existing Regulation No. 83 instead. He expressed the task force’s intention to do it through a new series of amendments (08) that would adapt Regulation No. 83 to the European requirements (e.g. Real Driving Emissions (RDE)) and that would refer to the new Regulation on WLTP to gain approval for tests Types 1 and 4. He emphasized that in this way Regulation No. 83 would stay alive and no Contracting Parties would have to cease applying it. He mentioned some ongoing discussions regarding In Service Conformity (ISC) and the scope of the 1958 Agreement.

14. The expert from OICA expressed his positive opinion on the solution found and encouraged GRPE to start thinking of how to deal with CO₂ emissions and energy consumption and of whether Regulations Nos. 83 and 101 should be kept separate or should be combined in line with the WLTP approach. Following a question by the expert from India on the possibility to include RDE in WLTP, he preferred to get an opinion from OICA and to consider first the challenges to harmonize RDE taking into account the sensitivity between authorities.

15. GRPE endorsed the new transposition route as proposed in GRPE-75-18 and agreed to resume discussion at its next session on the basis of the work carried out by the task force. The Chair of GRPE expressed his intention to seek the consent of WP.29 on this proposed route at its forthcoming session in June 2017.

16. GRPE acknowledged the progress made by the IWG on WLTP and noted the request for a meeting room for one day during the GRPE week in January 2018.