|Other 2-axle, 4-tire vehiclesa||574,571||923,059||1,082,490||1,111,277|
|Class I freight||26,159||34,590||38,955||38,186|
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: R = revised; P = preliminary.
Notes: Air and highway data for 2006 are revised. Transit, commuter rail, and other transit data for 2007 are preliminary.
Sources: Air Carrier-Bureau of Transportation Statistics, General Aviation-National Transportation Safety Board, Highway-Federal Highway Administration, Class I and Intercity Rail-Association of American Railroads, Transit and Commuter Rail-American Public Transportation Association 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 2009.