U.S. Vehicle-Kilometers

KEY: N = data do not exist; R = revised; U = data are not available.

^a All operations other than those operating under 14 CFR 121 and 14 CFR 135. Data for 1996 are estimated using new information on nonrespondents and are not comparable to earlier years. Mileage in source is multiplied by 1.151 to convert to nautical-miles for 1985-1997.

^b 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...

Energy Intensity of Light Duty Vehicles and Motorcycles (metric)

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-kilometer) is calculated by converting the fuel consumption in gallons to the energy equivalent Btu units and dividing by the passenger-kilometers. The heat equivalent factor used for Btu conversion is 125,000 Btus/gallon.

Light Duty Vehicle, Short Wheel Base and Motorcycle Fuel Consumption and Travel (metric)

KEY: U = data are not available.

^a 1960-1994 data include Motorcycles.

Number of People Residing in Areas of Significant Noise Exposure Around U.S. Airports

KEY:  dB = decibels; DNL = day-night sound level; R = revised.                  

^a Noise-level contours are graphical representations of noise levels on a map, similar to elevation contours on a topographic map.  Noise-level contours are lines that join points of equal sound levels. Areas between given noise-level contour lines would have a noise level between the two contour values. The U.S. Department of Transportation, Federal Aviation Administration (FAA) has identified DNL 65 dB as the...

Hybrid-Electric, Plug-in Hybrid-Electric and Electric Vehicle Sales

KEY: R = revised; Z = a value of zero, or value too small to report.

Weather's Share of Delay as Percent of Total Delay-Minutes, by Year

Amtrak Fuel Consumption and Travel

KEY:  kWh = kilowatt hour; R = revised; U = data are not available.

Annual U.S. Domestic Average Itinerary Fare in Current and Constant Dollars

National Highway Construction Cost Index (NHCCI)

Figure with latest data available at:

https://data.bts.gov/stories/s/9kj8-x76q/

Value of Construction Put in Place

Figure with latest data available at:

https://data.bts.gov/stories/s/435g-4p74#sources-of-transportation-investment