Office of Operations Freight Management and Operations

Major Truck Routes on the National Highway System: 2007 Map

U.S. map showing high volume, high truck percentage routes between California cities, from Texas to Pennsylvania, and from southern Michigan to northern Florida; high volume, low truck percentage routes in Southern California, the Bay Area, Chicago, Texas, and I-95 from Richmond to Boston; and low volume, high truck percentage routes throughout the Great Plains, and the Far West.

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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.

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