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Traffic congestion dipping as economy falters

The L.A. skyline and smog

Photo: oxyboricua/Flickr

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L.A. still No. 1

The Los Angeles metropolitan area, with its carpool lanes and emerging mass transit, shed two hours of wait-time in rush-hour traffic. Still, its sprawling freeway system remained the nation's worst for congestion, with drivers wasting an average of 70 hours in 2007.

Washington, D.C., overtook Atlanta as the second worst commuter community, with Atlanta slipping to third. Rounding out the top five were Houston and San Francisco.