HDDE definition
Examples of HDDE in a sentence
In accordance with the Maine Department of Environmental Protection Rules Chapter 127 New Motor Vehicle Emission Standards, all new vehicles purchased in Maine and equipped with a heavy-duty diesel engine (HDDE), beginning with Model Year 2012 must be certified to meet California Emissions Standards.
U.S. EPA adopted the lower NO x emission standard for HDDE in 1997 effective for model year 2004.