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SOURCES U.S. Department of Transportation, Federal Highway Administration and Federal Transit Administration, 1999 Status of the Nation's Highways, Bridges, and Transit: Conditions and Performance (Washington, DC: 2000). U.S....
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SOURCES: U.S. Department of Transportation, Bureau of Transportation Statistics, Airline On-Time Performance Database; and personal communication (for...
Commercial airlines offer a variety of discount fares to fill their flights, but these special discount airfares, facilitated by internet commerce and “frequent flyer” programs, complicate efforts to measure changes in the prices people pay for...
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NOTE: Interruptions of service include major and minor mechnical failures. If the vehicle operator was able to fix the problem and return the vehicle to...
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NOTE: Data are from the daily travel segment of the 2001 National Household Travel Survey. Long-distance travel data (i.e., trips of 50 miles or more collected during a 4-week...
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NOTE: Although dollar values in most other sections of this book have been converted to chained 1996 dollars, these data are...
Transportation in 2001 emitted 66 percent of the nation’s carbon monoxide (CO), 47 percent of nitrogen oxides (NOx, 35 percent of volatile organic compounds (VOC), 5 percent of particulates, 6 percent of ammonia, and 4 percent of sulfur dioxide.1 Highway vehicles...
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NOTES: Revisions to previous estimates are all related to the development of the 1999 National Emissions Inventory (NEI). The...
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NOTES: Transit includes motor bus, heavy rail, commuter rail, light rail, ferryboat, trolley bus, demand responsive, and others. Motor bus...
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Modes included are heavy, commuter, and light rail; bus; demand responsive; trolley bus; ferryboat; vanpool; tramway; monorail; automated guideway;...