2-3 Passenger Miles Traveled
millions
Mode | 2001 | 2011 |
---|---|---|
Air | ||
U.S. air carrier, domestic | 486,506 | 575,613 |
Highway | ||
Light duty vehiclea | * | 3,644,971 |
Motorcycle | * | 19,927 |
Truck | * | 267,207 |
Bus | * | 292,192 |
Passenger rail | ||
Amtrakb | 5,559 | 6,670 |
Commuter rail | 9,544 | 11,314 |
Heavy rail | 14,178 | 17,317 |
Light rail | 1,427 | 2,198 |
*2001 highway data are omitted because they are not comparable to 2011 data due to a change in vehicle occupancy rates derived from National Household Travel Surveys.
aIncludes passenger cars, light trucks, vans, and sport utility vehicles. bMeasured in revenue passenger miles.
Source: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-40, available at www.bts.gov as of October 2013.