Major Truck Routes on the National Highway System: 2007 Map
AADTT is average annual daily truck traffic and includes all freight-hauling and other trucks with six or more tires. MDT is average annual daily traffic and includes all motor vehicles
U.S. Department of Transportation, Federal Highway Administration, Office of Freight Management and Operations, Freight Analysis Framework, version 3.4, 2012.
You will need the Adobe Reader to view the PDFs on this page.