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Because of improvements in the longevity of passenger cars, the median age of the automobile fleet in the United States has increased significantly, from 7.0 years in 1992 to 8.4 years in 2002. The median age of the truck fleet,1 by contrast, began...
The data presented here are based on an analysis by the Bureau of Transportation Statistics (BTS) of the U.S. Census Bureau’s Survey of Income and Program Participation (SIPP) (availableat http://www.sipp. census.gov/...
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KEY: N = data are nonexistent; NPIAS = National Plan of Integrated Airport Systems.
SOURCE: U.S. Department of Transportation, Bureau of...
Highway travel times increased between 1990 and 2000 in 70 of the 75 urban areas studied by the Texas Transportation Institute. The average Travel Time Index (TTI) for these areas in 2000 was 1.39, an increase from 1.31 in 1990 [2]. This means that in 2000, it took...
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NOTE: Locomotive data are for Class I railroads only. Freight car data cover Class I railroads, other railroads, and private car owners.
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NOTES: 1999 is the most recent year for which these data are available by country. For these...
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1 Teragrams of CO2 equivalent—1 TgCO2 Eq = 1 million metric ton of carbon equivalent x (44/12). A teragram = 1 trillion...
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NOTE: The Travel Time Index is the ratio of peak period travel time to free-flow travel time. It expresses the...
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NOTES: Total transportation-related final demand is the sum of all consumer, private business, and government purchases of...
Transportation-related sources typically account for most oil reported to be spilled into U.S. waters reported each year.1 For instance, transportation’s share of the total volume of oil spilled between 1991 and 2000 varied from a high of 97 percent in 1996...