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

55 Pages Posted: 29 Mar 2013 Last revised: 25 Sep 2014

See all articles by Paul E. Carrillo

Paul E. Carrillo

George Washington University - Department of Economics

Arun S. Malik

George Washington University - Department of Economics

Yiseon Yoo

George Washington University - Department of Economics

Multiple version iconThere are 2 versions of this paper

Date Written: September 24, 2014

Abstract

Programs to reduce traffic 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. We conduct the first study of Quito, Ecuador's four-year-old Pico y Placa program and find that it has reduced ambient concentrations of carbon monoxide (CO), a pollutant primarily emitted by vehicles, by 9-11% during peak traffic hours. Given that ambient concentrations of CO generally track the spatial and temporal distributions of traffic, these reductions in pollution suggest similar reductions in vehicle flows. We find no evidence that traffic has shifted to other times of the day or week, or to other locations.

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

JEL Classification: R41, D62, Q53, C31, C54

Suggested Citation

Carrillo, Paul E. and Malik, Arun S. and Yoo, Yiseon, Driving Restrictions that Work? Quito's Pico y Placa Program (September 24, 2014). Available at SSRN: https://ssrn.com/abstract=2240327 or http://dx.doi.org/10.2139/ssrn.2240327

Paul E. Carrillo

George Washington University - Department of Economics ( email )

Monroe Hall Suite 340
2115 G Street NW
Washington, DC 20052
United States

Arun S. Malik (Contact Author)

George Washington University - Department of Economics ( email )

Monroe Hall, Suite 340
2115 G Street, NW
Washington, DC 20052
United States

HOME PAGE: http://home.gwu.edu/~amalik/

Yiseon Yoo

George Washington University - Department of Economics ( email )

Monroe Hall, Suite 340
2115 G Street, NW
Washington, DC 20052
United States

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