Green Infrastructure: The Effects of Urban Rail Transit on Air Quality | Zendy

Yihsu Chen | Zendy; Alexander Whalley | Zendy

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Green Infrastructure: The Effects of Urban Rail Transit on Air Quality

Author(s) -

Yihsu Chen,

Alexander Whalley

Publication year - 2012

Publication title -

american economic journal economic policy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.868

H-Index - 62

eISSN - 1945-7731

pISSN - 1945-774X

DOI - 10.1257/pol.4.1.58

Subject(s) - air quality index , air pollution , transport engineering , environmental science , ground level ozone , urban rail transit , public transport , pollutant , pollution , transit (satellite) , business , environmental engineering , engineering , meteorology , geography , chemistry , ecology , organic chemistry , biology

The transportation sector is a major source of air pollution worldwide, yet little is known about the effects of transportation infrastructure on air quality. This paper quantifies the effects of one major type of transportation infrastructure—urban rail transit—on air quality using the sharp discontinuity in ridership on opening day of a new rail transit system in Taipei. We find that the opening of the Metro reduced air pollution from one key tailpipe pollutant, carbon monoxide, by 5 to 15 percent. Little evidence that the opening of the Metro affected ground level ozone pollution is found however. (JEL L92, Q53, R41, R53)

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