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Figure 3-2. Highway Vehicle Miles Traveled by Vehicle Type: 2005

Despite doubling over the past two decades, truck traffic remains a relatively small share of highway traffic as a whole. In 2005, commercial trucks accounted for about 8 percent of highway vmt. Approximately two-thirds of commercial truck travel is by truck tractors hauling semitrailers and by other combinations, while the remaining third is by single unit trucks with 6 or more tires.

See paragraph above and table below for explanation of Figure 3-2

Chart in PDF format [1.5MB]

Data represented in the figure
Table in Excel format | Historical data

Vehicle type 2005
Passenger car 1,689,965
Light trucks 1,059,590
Other 17,416
Truck, single-unit 2-axle 6-tire or more 79,174
Truck, combination 143,662

Key: R = revised

Note: “Other” comprises bus and motorcyle. Light trucks include sport utility vehicles, minivans, and pickup trucks.

Source: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table VM-1, available at as of June 3, 2007.

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