Can a Clean Fuel Vehicle operate on gasoline or diesel fuel?
Yes. Since a vehicle or engine, not the fuel, is certified to low emissions standards, the manufacturer has the choice of how to meet the certification standards. In engineering a vehicle or engine to meet one of the four clean fuel fleet program certification levels, the manufacturer may rely on engine design, emission control components, on the cleaner burning properties of a fuel or any combination of the three. Recently, changes in engine design and emission control have made it possible for certain gasoline fueled vehicles to achieve a low-emissions certification.
