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Driving Restrictions That Work? Quito's Pico y Placa Program

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  • Paul E. Carrillo

    ()
    (Department of Economics/Institute for International Economic Policy, George Washington University)

  • Arun S. Malik

    ()
    (Department of Economics/Institute for International Economic Policy, George Washington University)

  • Jiseon Yoo

    (Department of Economics/Institute for International Economic Policy, George Washington University)

Abstract

Programs to reduce tra¢ c congestion and air pollution by restricting use of motor vehicles on working days have generally not met with success given existing studies of such programs in a number of cities. We conduct the Örst study of Quito, Ecuadorís three-year-old Pico y Placa program and Önd that it has reduced ambient concentrations of carbon monoxide (CO), a pollutant primarily emitted by vehicles, by 9-11% during peak tra¢ c hours. During an extended daytime period that encompasses hours when population exposure to air pollution is likely to be highest, CO concentrations have been reduced by approximately 6%. Given that ambient concentrations of CO generally track the spatial and temporal distributions of tra¢ c, these reductions in pollution suggest similar reductions in vehicle áows.

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Bibliographic Info

Paper provided by The George Washington University, Institute for International Economic Policy in its series Working Papers with number 2013-1.

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Length: 49 pages
Date of creation: Jan 2013
Date of revision:
Handle: RePEc:gwi:wpaper:2013-1

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Keywords: Forecasting; driving restrictions; traffic congestion; air pollution; difference-in-differences;

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