Energy Intensity of Light Duty Vehicles and Motorcycles

KEY: Btu = British thermal unit; N = data do not exist; U = data are not available.

^aMotorcycle is included in Light duty vehicle, short wheel base (previously Passenger car) in 1960 and 1965.

^b Energy Intensity (Btu/passenger-mile) is calculated by converting the fuel consumption in gallons to the energy equivalent Btu units and dividing by the passenger-miles. The heat equivalent factor used for Btu conversion is 125,000 Btus/gallon.

Energy Intensity of Certificated Air Carriers, All Services

KEY:  Btu = British thermal unit; R = revised.

^a U.S. owned carriers only. Operations of foreign-owned carriers in or out of the United States not included.

Energy Intensity of Passenger Modes

KEY: Btu = British thermal unit; N = data do not exist; U = data are not available.

^a Data from 2007 were calculated using a new methodology developed by FHWA. Data for these years are based on new categories and are not comparable to previous years. The new category Light duty vehicle, short wheel base replaces the old category Passenger car and includes passenger cars, light trucks, vans and sport utility vehicles with a wheelbase (WB) equal to or less than 121 inches. The new category Light duty vehicle, long wheel base replaces...

U.S. Government Energy Consumption by Agency and Source

KEY: Btu = British thermal unit; DHS = Department of Homeland Security; FY = fiscal year; GSA = General Services Administration; N = data do not exist; NASA = National Aeronautics and Space Administration; R = revised.

^a Includes all U.S. government agencies not separately displayed. See http://ctsedwweb.ee.doe.gov/Annual/Report/AgencyReference.aspx for agency list.

^b Includes liquefied petroleum gas and Navy special fuel oil.

Class I Rail Freight Fuel Consumption and Travel

KEY:  N = data do not exist; U = data are unavailable.

^a For 1960-80, the total includes a small number of steam and electric units, which are not included in the per locomotive fuel consumption figure.

^b United States owners only. Includes cars owned by Class I railroads, other railroads, car companies, and shippers.

^c Based on the distance run between terminals and/or stations; does not include yard or passenger train-miles.

^d Excludes passenger and work trains.

Transit Industry Electric Power and Primary Energy Consumption and Travel

KEY:  kWh = kilowatt hour; N = data do not exist.

^a Prior to 1984, the data in this table include the energy consumption of bus, heavy rail, light rail and trolley bus. Commuter rail, automated guideway, urban ferryboat, demand responsive vehicles, and most rural and smaller systems are excluded from the data during this period.

^b 1960 to 1991 data include propane. Series not continuous between 1991 and 1992. 1992 to 1995 data include propane, liquefied natural gas, bio/soy fuel, biodiesel, hydrogen, methanol and ethanol,...

Bus Fuel Consumption and Travel

Combination Truck Fuel Consumption and Travel

Single-Unit 2-Axle 6-Tire or More Truck Fuel Consumption and Travel

^a Beginning in 1998, the Federal Highway Administration (FHWA) used the Census Bureau's 1997 Vehicle Inventory and Use Survey (VIUS) for its baseline estimate of single-unit 2-axle 6-tire or more trucks. Prior to 1998, the FHWA used the Census Bureau's 1992 Transportation Inventory and Use Survey (TIUS) for its baseline estimates.  Therefore, post-1997 data may not be comparable to 1997 and earlier years.

Light Duty Vehicle, Long Wheel Base Fuel Consumption and Travel