|Other 2-axle, 4-tire vehiclesa||999,754||1,467,664||1,804,848||1,887,997|
a Includes vans, pickup trucks, sport utility vehicles, and other 2-axle, 4-tire motor vehicles that are not passenger cars.
b Includes municipally owned transit and commercial, federal, and school buses.
c Includes light and heavy rail only.
d Fiscal year data. Amtrak began operations in 1971.
e Includes demand response, ferryboat, and other transit not specified.
Key: R = revised, U = unavailable.
Note: Highway and other transit data are revised for 2005.
Sources: Air Carrier-Bureau of Transportation Statistics, General Aviation-Eno Transportation Foundation, Highway-Federal Highway Administration, Class I and Intercity Rail-Association of American Railroads, Transit and Commuter Rail-American Public Transit Association as cited in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-37, available at http://www.bts.gov as of October 2008