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Average Daily Long-Haul Truck Traffic on the National Highway System: 2045
Average annual daily truck traffic (AADTT) includes all freight-hauling and other trucks with six or more tires and includes all motor vehicles.
By 2045, long-haul freight truck traffic in the United States is expected to increase dramatically on the NHS. Forecast data indicate that truck travel may reach 507 million miles per day.
U.S. Department of Transportation, Federal Highway Administration, Office of Freight Management and Operations, Freight Analysis Framework, version 3.5, 2015