Today, the U.S. Environmental Protection Agency (EPA) along with the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) announced new regulations to reduce greenhouse gas emissions and improved fuel efficiency standards for heavy-duty vehicles, including trucks and buses. According to the EPA press release, the new regulations are expected to “reduce GHG emissions by about 250 million metric tons and save 500 million barrels of oil over the lives of the vehicles produced within the program’s first five years.”
The new standards cover three types of heavy trucks: combination tractors, heavy-duty pickups and vans, and vocational vehicles. For combination tractors, the new standards begin with 2014 model year vehicles and are expected to achieve a 20 percent reduction in CO2 levels and fuel consumption by 2018 model year. Heavy-duty truck regulations will likewise begin with model year 2014 and will originally see a 10 percent reduction for gasoline vehicles and 15 percent for diesel vehicles. These numbers will increase to 12 percent and 17 percent for 2018 model year vehicles. Vocational vehicles will see new requirements beginning in 2014 that will achieve up to a 10 percent reduction in fuel consumption and CO2 emissions by 2018 model year vehicles.