U.S. Vehicle-Miles (Millions)
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 1960-2006 data are for Passenger Cars and Other 2-axle, 4-tire vehicles, respectively. Data for 1960-2006 are not comparable to data for 2007-15.
c U.S. Department of Transportation, Federal Highway Administration (FHWA),...