Table 11,,,,,
Vehicle-Miles,,,,,
(Millions),,,,,
Mode,1970,1980,1990,2000,2003
Air carrier ,"2,068","2,523","3,963","5,664","6,085"
General aviation,"3,207","5,204","4,548",aN,aN
Passenger cars,"916,700","1,111,596","1,408,266","1,600,287","1,672,079"
Motorcycles,"2,979","10,214","9,557","10,469","9,577"
"Other 2-axle, 4-tire vehiclesb","123,286","290,935","574,571","923,059","984,094"
Trucks:,,,,,
   Single-unit,"27,081","39,813","51,901","70,500","77,757"
   Combination,"35,134","68,678","94,341","135,020","140,160"
Busesc,"4,544","6,059","5,726","7,590","6,783"
Raild:,,,,,
   Transite,441,403,561,648,P694
   Commuter,N,179,213,271,P286
   Class 1 freight,"29,890","29,277","26,159","34,590","35,555"
   Intercity/Amtrakf,690,235,301,368,332
Other transitg,N,15,324,833,P964
"a The Federal Aviation Administration has estimated vehicle-miles for general aviation aircraft through 1997, relying in part on hours-flown survey data. Vehicle-miles estimates for subsequent years are not yet available.",,,,,
"b Includes vans, pickup trucks, sport utility vehicles, and other 2-axle, 4-tire motor vehicles that are not passenger cars.",,,,,
"c Includes municipally owned transit and commercial, federal, and school buses.",,,,,
d Car-miles.,,,,,
e Includes light and heavy rail only.,,,,,
f Fiscal year data. Amtrak began operations in 1971.,,,,,
"g Includes demand response, ferryboat, and other transit not specified; 1980 data include “other transit” only.",,,,,
Key: N = data are nonexistent; P = preliminary.,,,,,
"Sources: Except as noted, various sources, as cited in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-32, available at http://www.bts.gov, as of October 2005.",,,,,
"2003 transit, commuter, and other transit: American Public Transportation Association, 2005 Public Transportation Fact Book, table 19, available at http://www.apta.com/research/stats/, forthcoming.",,,,,
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