4-1,,,,
Vehicle-Miles: 1990–2005,,,,
(Millions),,,,
Mode,1990,2000,2004,2005
Air,,,,
Air carrier ,"3,963","5,664","6,552","6,714"
General aviation,"4,548",N,N,N
Highway,,,,
Passenger cars,"1,408,266","1,600,287","R1,699,890","1,689,965"
"Other 2-axle, 4-tire vehiclesa","574,571","923,059","R1,027,164","1,059,590"
Motorcycles,"9,557","10,469","R10,122","10,770"
Busesb,"5,726","7,590","R6,801","6,646"
Trucks,,,,
Single-unit,"51,901","70,500","R78,441","79,174"
Combination,"94,341","135,020","R142,370","143,662"
Railc,,,,
Transitd,561,648,697,P715
Commuter,213,271,295,P303
Intercity/Amtrake,301,368,308,P265
Class 1 freight,"26,159","34,590","37,071","P37,712"
Other transitf,324,833,982,"P1,085"
"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 Car-miles.,,,,
d Includes light and heavy rail only.,,,,
e Fiscal year data.,,,,
"f Includes demand response, ferryboat, and other transit not specified.",,,,
Key: N = data are nonexistent; P = preliminary; R = revised.,,,,
"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 September 2007",,,,
"2005 transit, commuter, and other transit: American Public Transportation Association, 2007 Public Transportation Fact Book, table 11, available at http://www.apta.com/research/stats/ as of September 2007.",,,,
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