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Figure 8 - Modal Shares of Domestic Freight Ton-Miles: 2000

Figure 8 - Modal Shares of Domestic Freight Ton-Miles: 2000

Excel | CSV | Table Version

SOURCES: Air, pipeline, and water—U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics (BTS), National Transportation Statistics...

Figure 29 - Modal Share of Person Trips: 2001

Figure 29 - Modal Share of Person Trips: 2001

Excel | CSV | Table Version

NOTE: The 2001 National Household Travel Survey “travel period” data were not available when this report was prepared. Without these data, vacation trips and...

Transportation Energy Efficiency - Box

Transportation Energy Efficiency - Box Terms Used and Calculations Made

The following definitions apply to the discussion here:

Energy is measured in British thermal units (BTU). A passenger-mile traveled is one passenger transported one mile. A ton-mile is one ton transported one mile....

Vehicle Loadings on the Interstate Highway System - Box

Vehicle Loadings on the Interstate Highway System - Box Measuring Vehicle Loadings

Planning agencies design roadways to have a specific lifespan based on the expected volume and weight of vehicle traffic [1]. Since traffic streams are composed of a variety of vehicles of differentweights and...