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Travel activities related to Average daily minutes, weekdays Average daily minutes, weekends and holidays All travel activities 81.6 86.1 Work 46.1 37.8...Excel
Metric tons CO2 (millions)
Passenger cars Light-duty trucks Medium- and Heavy- trucks Buses Aircraft Ships and boats Rail Other...Excel
Percent Transportation 28.2% Non-Transportation 71.8% Total = 1,846 Teragrams of CO2 Equivalent Units Carbon...
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Year Vehicle-miles of travel (millions) Gallons (millions) 1965 856,147 64,446 1966 868,894 64,413 1967 904,...
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Miles per gallon
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003...Excel
Btu per passenger mile
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003...Excel
Total = 26 quadrillion Btu Percent Total Air 6.9% 1,810 Rail freight 2.0% 515 Transit & Amtrak 0.6% 150...Excel
Total highway Year Injuries per 100 million vehicle miles 1990 150.7 1991...Excel
SOURCE: National Transportation Safety Board, Aviation Accident Database, available at http://www.ntsb.gov/ as of July 2015.
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SOURCE: U.S. Department of Homeland Security, U.S. Coast Guard, Fifth Coast Guard District based upon Recreational Boat and Accident Reporting, available at http://www.dhs.gov/recreational-boat-and-accident-reporting/ as of July 2015.