The U.S. Environmental Protection Agency (EPA) and the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) are working together to address 2 interconnected and globally important needs; to reduce greenhouse gas (GHG) emissions and improve fuel efficiency of heavy-duty trucks and buses. The agencies estimate that regulatory standards introduced in 2014 will lead to the reduction of 270 million metric tons of CO2 emissions and save about 530 million barrels of oil over the life of vehicles built for the 2014 to 2018 model years, providing $49 billion in net program benefits. The reduced fuel use alone will enable $50 billion in fuel savings to accrue to vehicle owners, or $42 billion in net savings when considering technology costs. A second phase of regulations to reduce emissions even further is planned for model years beyond 2018. (1)
With heavy-duty vehicles accounting for 17 percent of transportation oil use and 12 percent of all US oil consumption (2), the acceptance and adoption of the new regulations by the trucking industry is key. According to Allen Schaeffer, Executive Director of the non-profit Diesel Technology Forum, "The 4.2 million new clean diesel commercial trucks put in service from 2007 through 2015 have saved nearly 3 billion gallons of diesel fuel and delivered significant emissions reductions equivalent to removing the CO2 emissions from 6.1 million light-duty vehicles from the road for one year, and NOx emissions from all light-duty vehicles for 2 years."
Diesel engines are already favored by the transportation and shipping industries due to their unrivaled power and cost effective performance, in fact, 98% of the largest commercial trucks are currently powered by diesel engines. (3) With such a large proportion of goods being moved all over the country via diesel powered vehicles, it's clear how much of an impact vehicles utilizing clean diesel technology can have. With new developments including advanced engines, new emissions control systems
and ultra-low sulfur diesel fuel, diesel will undoubtedly continue to be the technology of choice in the future of commercial trucking.