Key Air Emissions - Box 10-A

National data on air emissions are estimated by the U.S. Environmental Protection Agency (EPA). EPA’s National Emissions Inventory (NEI) is updated annually and covers mobile, stationary, and area sources of pollution...

Passenger-Miles of Travel - Box 2-A

Two national estimates of pmt are available; they differ in coverage, methodology, and other factors. The pmt data presented in section 2 of this report come from the Bureau of Transportation Statistics (BTS)...

Figure 7-6 - Share of Transit Buses that are Lift- or Ramp-Equipped: 1993-2002

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SOURCE: U.S. Department of Transportation, Federal Transit Administration, National Transit Summaries and Trends, Annual Reports, available at http://www....

Figure 6-8 - Air Travel Price Index by City of Origin for Three Large International Cities: 1995-2003

(All classes of service combined)

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NOTES: These data were developed for research purposes only and are not official BTS data....

U.S. International Trade in Transportation-Related Services - Box 12-B

Exports of freight transportation services occur when a U.S. carrier receives payments from a foreign company or individual for transporting merchandise. Imports of freight transportation...

Figure 10-8 - Hazardous Materials Incidents by Selected Mode: 1992-2002

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NOTES: Water data are not included on these figures but are included in the corresponding tables. On an average annual basis, 9 incidents were reported by vessels. Two...

Figure 2-16 - Highway Vehicle-Miles of Travel by Vehicle Type: 1992-2002

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SOURCE: 1992–1994: U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA), Highway Statistics Summary to 1995 (Washington, DC: 1997...

Figure 2-18 - Rail Transit Vehicle-Miles: 1992-2002

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SOURCE: American Public Transit Association, Public Transportation Fact Book, 2004 (Washington, DC: 2004), table 18.

Figure 11-6 - Rural Bridge Condition by Functional Class: 2002

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NOTES: Functionally obsolete refers to bridges that do not have the lane widths, shoulder widths, or vertical clearances adequate to serve traffic demand, or the bridge may...

Figure 9-6 - Injury Rates for Occupants of Highway Vehicles and Motorcycles: 2002

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NOTE: Some of the data used to calculate 2002 injury rates are preliminary.

SOURCES: Injuries—U.S. Department of Transportation...