Table 9 - Number of Vehicles, Aircraft, Railcars, and Vessels
| 1980 | 1990 | 2000 | 2002 | |
|---|---|---|---|---|
| Highway | ||||
| Truck, single-unit 2-axle 6-tire or more | 4,373,784 | 4,486,981 | 5,926,030 | 5,650,619 |
| Truck, combination | 1,416,869 | 1,708,895 | 2,096,619 | 2,276,661 |
| Truck, total | 5,790,653 | 6,195,876 | 8,022,649 | 7,927,280 |
| Air | ||||
| Air carriers | 3,808 | 6,083 | 8,055 | 8,194 |
| Rail | ||||
| 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 |
| Water | 38,788 | 39,445 | 41,354 | 41,002 |
| 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.