Sources: Diesel Technology Forum, Washington, D.C.
Four million of the 9.5 million medium and heavy-duty commercial trucks operating in the U.S. are equipped with newer technology engines, according to a Diesel Technology Forum (DTF) analysis of IHS Automotive vehicles in operation statistics. The analysis encompasses model year 2007–2015 Class 3-8 diesel trucks in all 50 states and the District of Columbia.
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