An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Percentage of mileage in roadway class
Excel | CSV | Graphic Version
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Interstates 34.7 33.0 27.0...Billions of chained 2000 dollars, except as noted
Excel | CSV | Graphic Version
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Transportation-related...Percent
Excel | CSV | Graphic Version
Trip distance To/from work Work-related business Shopping Other family/ personal business School/ church Medical/...Percent
Excel | CSV | Graphic Version
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Good condition 68 N N N 72 N 72 73 73 71 75...Millions
Excel | CSV | Graphic Version
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Tons 1,399 1,397 1,470 1,550 1,611 1,585 1,649 1,717 1,738 1,742 1,767...Excel | CSV | Graphic Version
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Passenger car occupants 8.3 8.3 8.4 8.4 8.4 8.1 7.7 7.5...Excel | CSV | Graphic Version
Person Miles Person Trips Number (billions) Percent of miles Number (millions) Percent of trips Walking 26,202 0.65 35,326 8.60 Bicycling 6,195...Chained 2000 dollars
Excel | CSV | Graphic Version
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Vehicle purchases 2,517 2,569 2,889 2,693 2,820 2,...Billions of current dollars
Excel | CSV
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 Highway 33.2 33.5 33.6 35.4...Excel | CSV | Graphic Version
Mode or source Percentage of total All oil spills (gallons) Maritime tank vessels 37.4 7,245,027 Maritime no tank and other vessels 18.5 3,584,388 Maritime...