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.
Growing adoption of clean diesel systems utilizing Selective Catalytic Reduction (SCR) technology is reducing emissions and increasing fuel efficiency in heavy-duty trucks and smaller vehicles, according to Diesel Technology Forum Executive Director Allen Schaeffer.
During the first of three hearings on updated national air quality standards for ground-level ozone, Diesel Technology Forum Executive Director Allen Schaeffer told U.S. Environmental Protection Agency officials that new engine technology and accelerated upgrades to existing vehicles and equipment will be important in meeting future thresholds. EPA has proposed to strengthen ozone standards to a level within a range of 65 to 70 parts per billion to further reduce national air quality issues, while also taking comments on a level as low as 60 ppb.