|Truck, single-unit 2-axle 6-tire or more||4,373,784||4,486,981||5,926,030||5,650,619|
|Class I, locomotive||28,094||18,835||20,028||20,506|
|Class I, freight cars (1)||1,168,114||658,902||560,154||477,751|
|Nonclass I freight cars (1)||102,161||103,527||132,448||130,590|
|Railcar companies and shippers freight cars (1)||440,552||449,832||688,194||691,329|
|Nonself-propelled vessels (2)||31,662||31,209||33,152||32,381|
|Self-propelled vessels (3)||7,126||8,236||8,202||8,621|
|Oceangoing steam and motor ships (4)||864||636||454||426|
(1) Beginning with 2001 data, Canadian-owned U.S. railroads are
excluded. This accounted for about
47,000 cars in 2000.
(2) Nonself-propelled vessels include dry-cargo barges, tank barges, and railroad-car floats.
(3) Self-propelled vessels include dry cargo, passenger, off-shore support, tankers, and towboats.
(4) 1,000 gross tons and over.
SOURCE: Various sources, as cited in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-11, available at http://www.bts.gov.