The Effect of Driving Restrictions on Air Quality in Mexico City
利用高频监测数据评估墨西哥城“今日不行驶”限行政策对空气质量的影响，发现该政策并未改善空气质量，反而导致车辆总数增加及高排放车辆比例上升。
In 1989, the government of Mexico City introduced a program, Hoy No Circula, that bans most drivers from using their vehicles one weekday per week on the basis of the last digit of the vehicle's license plate. This article measures the effect of the driving restrictions on air quality using high-frequency measures from monitoring stations. Across pollutants and specifications there is no evidence that the restrictions have improved air quality. Evidence from additional sources indicates that the restrictions led to an increase in the total number of vehicles in circulation as well as a change in composition toward high-emissions vehicles. (c) 2008 by The University of Chicago. All rights reserved.