the wltp procedure (world harmonized light-duty vehicles test procedure) is a global, harmonized standard for determining the levels of pollutants, co emissions and fuel consumption of traditional and hybrid cars, as well as the range of fully electric vehicles. this new protocol was developed by the united nations economic commission for europe (unece) to replace the new european driving cycle (nedc) as the european vehicle homologation procedure. its final version was released in 2015. one of the main goals of the wltp is to better match the laboratory estimates of fuel consumption and emissions with the measures of an on-road driving condition.