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SOURCE: U.S. Environmental Protection Agency (EPA), Office of Air Quality Planning and Standards, National Emissions Inventory, Air Pollutant...
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NOTES: Transit includes motor bus, heavy rail, commuter rail, light rail, ferryboat, trolley bus, demand responsive, and others. Motor bus and...
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SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, calculation based on U.S. Department of Transportation, Maritime...
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KEY: GDP = Gross Domestic Product.
NOTES: For-hire transportation services include railroad transportation, local and...
Commuting—trips made to and from work—accounted for 15 percent of all personal trips in 2001. In addition, other work-related trips (e.g., travel to meetings and conferences) accounted for 3 percent of all trips. The average length of a commuting trip was 12...
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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 average amount of...
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NOTE: Commercial airlines are air carriers providing scheduled or nonscheduled passenger or freight service, including...
(All classes of service)
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1 The O&D Survey indices are computed using the Fisher Index formula,...
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NOTES: Data include only privately owned capital stock, except for highways and streets. Consumer motor vehicles are consumer durable goods. In-...
The 2001 NHTS was sponsored by the Bureau of Transportation Statistics and the Federal Highway Administration of the U.S. Department of Transpor-tation. Households were asked about all the trips 1 they took on a...