Freight Facts and Figures 2011
Figure 3-9. Average Daily Long-Haul Truck Traffic on the National Highway System: 2007
Long-haul freight truck traffic in the United States is concentrated on major routes connecting population centers, ports, border crossings, and other major hubs of activity. Except for Route 99 in California and a few toll roads and border connections, most of the heaviest traveled routes are on the Interstate System.
U.S. Department of Transportation, Federal Highway Administration, Office of Freight Management and Operations, Freight Analysis Framework, version 3.1, 2010.
You will need the Adobe Reader to view the PDFs on this page.