37. The Chair of the IWG on Environmental and Propulsion Performance Requirements for L-category vehicles (EPPR) presented a status report (GRPE-75-24) on the activities of the group. He mentioned that the first priority was the development of amendments to GTR No. 2. He explained that the progress was slower than anticipated due to regional differences so that a first draft was not yet ready for this session but planned to be submitted at the next GRPE session in January 2018. He sought guidance from GRPE on the temperature units to be used. He underlined that the work on On-Board Diagnostic systems (OBD) Stage II would begin in year 2018 after the work progress on amendments to GTR No. 2.

38. The drafting coordinator of the IWG on WLTP highlighted the general use of °C in WLTP development with a few exceptions for specific equations in which Kelvin is required.

39. The Chair of GRPE advised to be in line with WLTP and recommended the general use of °C with the flexibility to use Kelvin when necessary. GRPE acknowledged the progress made by the IWG on EPPR and noted the request for a meeting room for one day during the GRPE week in January 2018.