TY  - BOOK
AU  - Gendron-Carrier,Nicolas
AU  - Gonzalez-Navarro,Marco
AU  - Polloni,Stefano
AU  - Turner,Matthew A.
ED  - National Bureau of Economic Research.
TI  - Subways and Urban Air Pollution
T2  - NBER working paper series
PY  - 2018///
CY  - Cambridge, Mass.
PB  - National Bureau of Economic Research
N1  - January 2018; Hardcopy version available to institutional subscribers
N2  - We investigate the effect of subway system openings on urban air pollution. On average, particulate concentrations are unchanged by subway openings. For cities with higher initial pollution levels, subway openings reduce particulates by 4% in the area surrounding a city center. The effect decays with distance to city center and persists over the longest time horizon that we can measure with our data, about four years. For highly polluted cities, we estimate that a new subway system provides an external mortality benefit of about $1b per year. For less polluted cities, the effect is indistinguishable from zero. Back of the envelope cost estimates suggest that reduced mortality due to lower air pollution offsets a substantial share of the construction costs of subways
UR  - https://www.nber.org/papers/w24183
UR  - http://dx.doi.org/10.3386/w24183
ER  -