Heavy duty vehicles
From 1995, emissions of heavy-duty vehicles (HDVs) powered by gasoline, liquefied petroleum gas (LPG) or natural gas were regulated in the standard , updated in 2012. Today, HDV emissions are regulated by two standards:
•, adopted in February 2018, for HDVs powered by diesel
•, adopted in 2012, for HDVs powered by gasoline, LPG, natural gas or other alternative fuels