WASHINGTON - A new study shows that clean diesel technologies in engines manufactured beginning in 2007 not only reduced certain emissions by 90 percent over 2004 models, but far exceeded expectations in their performance in cleaning up the nation's air quality.
Tags: American Trucking Associations , ATA, CARB, emission reduction, Engine Manufacturers Association, EPA Smartway Transport Partnership, U.S. Department of Energy, U.S. Environmental Protection Agenc