Data for figure 7,,,,,,,
"Number of U.S. Trucks, Vehicle Miles Traveled, and Miles per Truck: 1980, 1990, 2003",,,,,,,
(Millions),,,,,,,
,1980,1990,2003,,,,
"Truck, single-unit 2-axle 6-tire or more",4.4,4.5,5.7,,,,
"Truck, combination",1.4,1.7,2.2,,,,
"Truck, total ",5.8,6.2,7.9,,,,
"
NOTE: Total trucks exclude light trucks such as pickup trucks, sport utility vehicles, and minivans.",,,,,,,
"SOURCE:  U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics 2004, available at http://www.bts.gov/publications/national_transportation_statistics/ as of August 2005.",,,,,,,