2-1 Vehicle Miles Traveled

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millions

Mode 2001 2011
Air    
U.S. air carrier, domestica 5,545 6,005
Highway    
Light duty vehicleb,c 2,569,980 2,646,641
Motorcycleb 9,633 18,500
Truckb 208,928 267,207
Busb 7,070 13,783
Passenger rail    
Amtrakd 378 296
Commuter raild 277 339
Heavy raild 608 655
Light raild 54 89

aMeasured in revenue aircraft miles. bData for 2001 and 2011 may not be comparable due to changes in methodology. cIncludes passenger cars, light trucks, vans, and sport utility vehicles. dMeasured in car miles.

Source: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-35, available at www.bts.gov as of October 2013.