Air Quality and Public Health in Megacities: Has Air Quality Improved Due to Driving Restrictions in Mexico City?

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Publition Date:
December 21, 2016

Industry:
Government

Industry:
Automotive

Source:
Harvard T. H. Chan School of Public Health

Mexico City, one of the largest urban centers in the world with 22 million inhabitants, has long wrestled with severe air pollution proble. In June 2014, Tanya Müller Garcia, Secretary of (SEDEMA) of the government of Mexico City announced a controversial step to tighten the Hoy No Circula Program (HNC), also known as Nodrive days. The goal of the program, first implemented in 1989, was to improve air quality by taking almost half a million vehicles a day out of circulation in the Mexico City metropolitan area (MCMA). The HNC program had undergone many modifitions since it was first implemented; the June 2014 program modifitions introduced additional restrictions that were particularly unpopular beuse they seemed to fall disproportionately on the lower socio groups in the area. Protesters reacted strongly and blockaded main avenues and access routes into the city for several days, using massive disruptions. Secretary Müller was facing increasing pressure to evaluate both the Hoy No Circula Program and SEDEMA’s approach to controlling air pollution in . Secretary Müller knew that the best approach was far from simple or obvious. The s, politics, health, and transportation needs of the people of MCMAcombined with its geography and climatemade for a mix that was potenlly as noxious as the air itself on certain days.

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Air Quality and Public Health in Megacities: Has Air Quality Improved Due to Driving Restrictions in Mexico City?


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