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Making Room for More Cars on the Road
January 28, 2009

Urban planners and local officials are eager to find more effective traffic congestion policies—and to deal with projected 50-percent increases in domestic automobile vehicle miles between 2010 and 2030. The problem creates both frustration and productivity losses: motorists in large U.S. urban areas lost 38 hours to traffic delays in 2005, up from 14 hours in 1982.

In a recent paper, “Pricing Urban Congestion,” RFF Senior Fellow and Allen Kneese Chair Ian W.H. Parry examines policy designs proposed over the last 20 years to ease crowded roads in densely populated areas. He notes that expanded mass transit schemes and fuel taxes have had limited impact. His conclusion: Peak-period road pricing—by which motorists pay fees when they travel on congested roads during peak hours—offer a much better solution, along with other pricing schemes, like those implemented in London, that allow only vehicles with access licenses into certain parts of the city.

Parry is optimistic about the prospects for eventual policy changes to address the problem. “It is an exciting time to be a transportation economist, with political and public opinion at last beginning, albeit perhaps only gradually, to come around to the idea of congestion pricing,” he writes. He cautions, however, that “economists have their work cut out in empirically assessing the optimal design of, and efficiency gains from, congestion pricing. They need to better reconcile efficiency and feasibility, particularly in the design of compensation schemes that avoid large burdens on politically influential motorist groups, at minimum cost in terms of forgone economic efficiency.”

 

Ian Parry
Ian W.H. Parry
RFF Senior
Fellow

DP 08-35
Pricing Urban Congestion
Ian Parry
November 2008

 

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