| 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Air | ||||||||||
| Air carrier | 8,111 | 8,228 | 8,055 | 8,497 | 8,194 | 8,176 | 8,186 | 8,225 | 8,089 | 8,044 |
| General aviation(active fleet) | 204,710 | 219,464 | 217,533 | 211,446 | 211,244 | 209,708 | 219,426 | 224,352 | 221,943 | 231,607 |
| Highway, total (registered vehicles) | ||||||||||
| Passenger car | 131,838,538 | 132,432,044 | 133,621,420 | 137,633,467 | 135,920,677 | 135,669,897 | 136,430,651 | 136,568,083 | 135,399,945 | 135,932,930 |
| Motorcycle | 3,879,450 | 4,152,433 | 4,346,068 | 4,903,056 | 5,004,156 | 5,370,035 | 5,767,934 | 6,227,146 | 6,678,958 | 7,138,476 |
| Other 2-axle 4-tire vehicle | 71,330,205 | 75,356,376 | 79,084,979 | 84,187,636 | 85,011,305 | 87,186,663 | 91,845,327 | 95,336,839 | 99,124,775 | 101,469,615 |
| Truck, single-unit 2-axle 6-tire or more | 5,734,925 | 5,762,864 | 5,926,030 | 5,703,501 | 5,650,619 | 5,848,523 | 6,161,028 | 6,395,240 | 6,649,337 | 6,806,630 |
| Truck, combination | 1,997,345 | 2,028,562 | 2,096,619 | 2,154,174 | 2,276,661 | 1,908,365 | 2,010,335 | 2,086,759 | 2,169,670 | 2,220,995 |
| Bus | 715,540 | 728,777 | 746,125 | 749,548 | 760,717 | 776,550 | 795,274 | 807,053 | 821,959 | 834,436 |
| Transit | ||||||||||
| Motor bus | 55,661 | 57,352 | 58,578 | 60,256 | 60,719 | 61,659 | 61,318 | 62,284 | 64,025 | 63,359 |
| Light rail cars | 1,061 | 1,160 | 1,306 | 1,359 | 1,448 | 1,482 | 1,622 | 1,645 | 1,801 | 1,802 |
| Heavy rail cars | 10,296 | 10,362 | 10,311 | 10,718 | 10,849 | 10,754 | 10,858 | 11,110 | 11,052 | 11,222 |
| Trolley bus | 646 | 657 | 652 | 600 | 616 | 672 | 597 | 615 | 609 | 559 |
| Commuter rail cars and locomotives | 5,535 | 5,549 | 5,497 | 5,528 | 5,631 | 5,866 | 6,130 | 6,290 | 6,300 | 6,279 |
| Demand response | 20,042 | 20,761 | 22,087 | 24,668 | 24,808 | 25,873 | 26,333 | 28,346 | 29,406 | 29,433 |
| Other | 7,105 | 7,467 | 7,705 | 8,137 | 8,033 | 8,626 | 10,544 | 11,622 | 12,454 | 12,953 |
| Rail | ||||||||||
| Class I, Freight cars | 575,604 | 579,140 | 560,154 | 499,860 | 477,751 | 467,063 | 473,773 | 474,839 | 475,415 | 460,172 |
| Class I, Locomotive | 20,261 | 20,256 | 20,028 | 19,745 | 20,506 | 20,774 | 22,015 | 22,779 | 23,732 | 24,143 |
| Nonclass I freight cars | 121,659 | 126,762 | 132,448 | 125,470 | 130,590 | 124,580 | 120,169 | 120,195 | 120,688 | 120,463 |
| Car companies and shippers freight cars | 618,404 | 662,934 | 688,194 | 688,806 | 691,329 | 687,337 | 693,978 | 717,211 | 750,404 | 805,074 |
| Amtrak, Passenger train car | 1,962 | 1,992 | 1,894 | 2,084 | 2,896 | 1,623 | 1,211 | 1,186 | 1,191 | 1,164 |
| Amtrak, Locomotive | 345 | 329 | 378 | 401 | 372 | 442 | 276 | 258 | 319 | 270 |
| Water | ||||||||||
| Nonself-propelled vessels | 33,509 | 33,387 | 33,152 | 33,042 | 32,381 | 31,335 | 31,296 | 32,052 | 32,211 | 31,654 |
| Self-propelled vessels | 8,523 | 8,379 | 8,202 | 8,546 | 8,621 | 8,648 | 8,994 | 8,976 | 8,898 | 9,041 |
| Oceangoing steam and motor shipsa | 473 | 470 | 461 | 454 | 443 | 416 | 412 | 357 | 272 | 275 |
| Recreational boats | 12,565,930 | 12,738,271 | 12,782,143 | 12,876,346 | 12,854,054 | 12,794,616 | 12,781,476 | 12,942,414 | 12,746,126 | 12,875,568 |
a Beginning in 2006, vessels are reported if they are greater than 10,000 deadweight tons; prior to 2006, boats of greater than 1,000 deadweight tons were reported.
NOTES: Air Carriers are those aircraft carrying passengers or cargo for hire under 14 CFR 121 and 14 CFR 135. The number of aircraft is the monthly average of the number of aircraft reported in use for the last 3 months of the year. General aviation data includes air taxi aircraft. Other transit includes aerial tramway, automated guideway transit, Alaska railroad, cablecar, ferry boat, inclined plane, monorail, and vanpool. Nonself-propelled vessels include dry-cargo barges, tank barges, and railroad-car floats.
Self-propelled vessels include dry-cargo and/or passenger, offshore supply vessels, railroad-car ferries, tankers, and towboats. Recreational boats include those that are required to be numbered in accordance with Chapter 123 of Title 46 U.S.C.
SOURCES: Air Carrier: Aerospace Industries Association; General Aviation: Federal Aviation Administration; Highway: Federal Highway Administration; Transit: Federal Transit Administration; Rail: Association of American Railroads and National Railroad Passenger Corporation (Amtrak); Water: U.S. Army Corps of Engineers and U.S. Department of Homeland Security, U.S. Coast Guard 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/publications/national_transportation_statistics as of April 2010.