About 43% of all medium- and heavy-duty diesel commercial trucks in operation in the U.S. – 4 million of 9.5 million diesel trucks – are now equipped with newer technology clean diesel engines, according to new Diesel Technology Forum (DTF) analysis of IHS Automotive vehicles in operation statistics.
The new analysis includes IHS Automotive vehicles in operation representing Class 3-8 diesel trucks from model-year 2007 through 2015.
Beginning in 2007, all heavy-duty diesel trucks sold had to meet particulate emissions levels of no more than 0.01 grams per brake horse-power hour (g/HP-hr.) – a level near zero.
“The … trucking fleet is transitioning to newer clean diesel technology which means immediate fuel savings, lower greenhouse gas emissions, and cleaner air,” said Allen Schaeffer, executive director of the Diesel Technology Forum. “This newest generation of clean diesel trucks have nitrogen oxides (NOx) emissions that are 99% lower than previous generations along with 98% fewer emissions of particulate matter, resulting in significant clean air benefits throughout the U.S.”