Table 9,,,,
"Number of Aircraft, Railcars, Vehicles, and Vessels",,,,
Mode,1980,1990,2000,2002
Air carriers,"3,808","6,083","8,055","8,194"
General aviation,"211,045","198,000","217,533","211,244"
Automobiles,"121,600,843","133,700,496","133,621,420","135,920,677"
Motorcycles ,"5,693,940","4,259,462","4,346,068","5,004,156"
"Other 2-axle, 4-tire vehiclesa ","27,875,934","48,274,555","79,084,979","85,011,305"
Trucks:,,,,
Single-unit,"4,373,784","4,486,981","5,926,030","5,650,619"
Combination,"1,416,869","1,708,895","2,096,619","2,276,661"
Busesb,"528,789","626,987","746,125","760,717"
Passenger rail: ,,,,
Amtrak—Cars,"2,128","1,863","1,894","2,896"
Locomotives,419,318,378,372
Commuter railcars and locomotives,"4,500","4,415","5,073","P5,300"
Transitc,"10,654","11,332","12,168","P12,163"
Class I rail:,,,,
Freight cars,"1,168,114","658,902","560,154","477,751"
Locomotives,"28,094","18,835","20,028","20,506"
Other freight cars,"542,713","553,359","820,642","821,919"
"Nonself-propelled vessels (barges)d,e","31,662","31,209","33,152","32,381"
"Self-propelled vesselsd,e","7,126","8,236","8,202","8,621"
"Oceangoing shipse (1,000 gross tons and over)",864,636,454,426
Recreational boatsf,"8,577,857","10,996,253","12,782,143","12,854,054"
"a Includes vans, pickup trucks, sport utility vehicles, and other 2-axle, 4-tire vehicles that are not passenger cars.   ",,,,
"b Includes municipally owned transit, commercial, federal, and school buses.   ",,,,
c  Includes light and heavy rail only.   ,,,,
d See Glossary for definitions.   ,,,,
e U.S.-flag vessels.   ,,,,
f Numbered boats. ,,,,
Key: P = preliminary.,,,,
"Sources: Various sources, as cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, table 1-11, available at http://www.bts.gov (latest data forthcoming). ",,,,