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For most large U.S. cities, Friday afternoon is the worst time to be stuck in traffic.
Traffic research firm Inrix compiled data for Governing measuring traffic congestion in 100 metro areas. The company collects data via mobile application, GPS systems in personal and commercial vehicles and road sensors. Figures listed reflect average delays for all types of roadways: arterial roads, highways and city streets for entire metropolitan regions.
Traffic congestion data was measured from May 2011 to May 2012.
Zoom in and click a city on the map to display traffic delay data for its metro area. Larger makers represent a higher Inrix commute delay index, which refers to the percentage of average additional time added to a Friday afternoon commute between 4 and 7 p.m. An index of 20, for example, would mean a trip taking 30 minutes without traffic is delayed six minutes.
A complete list of all metro areas, ranked by Friday afternoon commutes with the longest delays:
Source: INRIX
GOVERNING Data is your source for state and local government statistics and public records.
Feel free to use any data or visualizations in your own reports with attribution and a link to the source.
Contact: Mike Maciag, mmaciag@governing.com
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