U.S. Department of Energy - Energy Efficiency and Renewable Energy
Vehicle Technologies Office
Fact #580: July 20, 2009
Traffic Congestion Grows
According to the Texas Transportation Institute's latest study on traffic congestion, two of every three cars experienced congestion in their morning or evening trip in 2007. As expected, traffic congestion is worse in very large urban areas, but congestion has grown in small areas, too. The share of travel in congested conditions has more than doubled from 1982 to 2007 for each of the urban areas shown.
Share of Travel in Congested Conditions
Travel in Congested Conditions, 1982, 1997, and 2007
||Percent of Travel
Source: Texas Transportation Institute, 2009 Urban Mobility Report, July 2009.
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