GFV overview of existing emission definitions applicable to light and heavy duty vehicles in EU and UNECE legislation, including certain definitions currently (February 2012) under discussion, in order to identify possible inconsistencies.

Comments from Poland on the Gaseous Fueled Vehicles (GFV) informal group proposal to redefine the class of bi-fuel vehicles under UN R83 in order to permit the simultaneous use of gas and petrol while in gas mode.