91. The representative of EU, on behalf of the Chair of the IWG on Environmental and Propulsion Performance Requirements (EPPR) for L-category vehicles, summarized the work progress of the IWG. The Chair of AC.3 questioned whether the IWG should work on establishing a new GTR dealing with onboard diagnostic (OBD) requirements when UN GTR No. 5 already addressed OBD in a generic structure. AC.3 agreed to resume discussion on this specific question at its March 2015 session under the agenda item on guidance (item 16 above).