Data Post

Database

Urban traffic congestion

Here are the number of hours drivers in the nation's largest urban areas sit in traffic each year.

Related story: D.C. has worst traffic in U.S., study says

Urban area 2010 2009 2005 2000 1982
Washington DC-VA-MD 74 70 83 73 20
Chicago IL-IN 71 70 77 55 18
New York-Newark NY-NJ-CT 54 42 51 35 10
Dallas-Fort Worth-Arlington TX 45 48 51 40 7
Boston MA-NH-RI 47 48 57 44 13
Seattle WA 44 44 51 49 10
Houston TX 57 58 55 45 24
Atlanta GA 43 44 58 52 13
Philadelphia PA-NJ-DE-MD 42 39 42 32 12
San Diego CA 38 37 46 35 8
San Francisco-Oakland CA 50 49 74 60 20
Miami FL 38 39 45 38 10
Los Angeles-Long Beach-Santa Ana CA 64 63 82 76 39
Detroit MI 33 33 41 36 14
Phoenix AZ 35 36 44 34 24

SOURCE: Texas Transportation Institute. GRAPHIC: James Buck - The Washington Post. Published September 27, 2011.