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Data used here come from a national mortality database compiled by the Centers for Disease Control’s National Center for Health Statistics. Years of potential life lost (YPLL) are computed from this...
The U.S. transportation system carried 20 percent more ton-miles of domestic freight in 2000 than in 1990 [1]. This growth was unevenly distributed in terms of geography and mode. The Federal Highway Administration developed the Freight Analysis Framework...
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1 “Vacation” includes rest and relaxation.
NOTE: The 2001 National Household Travel Survey defined a trip as each time a person went from one...
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NOTES: Large buses have more than 35 seats, medium buses have 25–35 seats, and small buses have less than 25 seats. Articulated...
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...