TABLE A-2 Number of Air Carriers, Railroads, Interstate Motor Carriers, Marine Vessel Operators and Pipeline Operators: 1995-2005

TABLE A-2 Number of Air Carriers, Railroads, Interstate Motor Carriers, Marine Vessel Operators and Pipeline Operators: 1995-2005

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  1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
Air carriers 96 96 96 96 94 91 87 83 80 83 85
Major air carriers 11 12 13 13 13 15 15 15 14 14 17
Other air carriers 85 84 83 83 81 76 72 68 66 69 68
Railroads 541 553 550 559 555 560 571 552 549 556 560
Class I railroads 11 10 9 9 9 8 8 7 7 7 7
Other railroads 530 543 541 550 546 552 563 545 542 549 553
Interstate motor carriers 346,000 379,000 417,000 477,486 517,297 560,393 592,909 600,104 674,314 677,317 679,744
Marine vessel operators 1,381 1,348 1,311 1,235 1,174 1,114 1,063 877 798 767 773
Pipeline operators 2,387 2,346 2,301 2,260 2,260 2,172 2,128 2171 2196 2216 2166
Hazardous gas transmission 217 225 237 243 239 237 232 222 235 275 292
Natural gas transmission 975 971 957 889 885 844 816 900 925 913 945
Natural gas distribution 1,444 1,397 1,365 1,375 1,393 1,363 1,341 1,331 1,309 1,318 1,291

NOTES: Air carrier groups are categorized based on their annual operating revenues as major, national, large regional, and medium regional. The thresholds were last adjusted July 1, 1999, and the threshold for major air carriers is currently $1 billion. The other air carrier category contains all national, large regional, and medium regional air carriers. Interstate motor carrier figures are for the fiscal year, October through September. The Federal Motor Carrier Safety Administration deletes motor carriers from the Motor Carrier Management Information System (MCMIS) when they receive an official notice of a change in status. This most often occurs when a safety audit or compliance review is attempted. As a result, inactive carriers may be included in the MCMIS. There is some overlap among the operators for the pipeline modes so the total number of pipeline operators is lower than the sum for the three pipeline modes.

SOURCES: Various sources, as cited in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics 2007, table 1-2, available at http://www.bts.gov/, as of April 2007.