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Sustainability 2017, 9(6), 1067; doi:10.3390/su9061067

Can Green Traffic Policies Affect Air Quality? Evidence from A Difference-in-Difference Estimation in China

1
and
2,3,4,*
1
College of Economics and Management, China Agricultural University, Beijing 100083, China
2
Institute of Resource, Environment & Sustainable Development Research, JiNan University, Guangzhou 510632, China
3
School of Economics, JiNan University, Guangzhou 510632, China
4
School of Economics and Management, Nanjing University of Information Science and Technology, Nanjing 210044, China
*
Author to whom correspondence should be addressed.
Academic Editor: Fabio Carlucci
Received: 1 April 2017 / Revised: 11 June 2017 / Accepted: 13 June 2017 / Published: 20 June 2017
(This article belongs to the Section Economic, Business and Management Aspects of Sustainability)
View Full-Text   |   Download PDF [236 KB, uploaded 20 June 2017]   |  

Abstract

Air pollution has been a serious challenge for human sustainable development. Researches show that emissions from the transport sector have been found to be a main source of air pollution in cities. Governments have implemented numerous green traffic policies to mitigate harmful emissions. However, the problem as to whether the green traffic policies are effective, and the extent to which the policies affect air quality remain unknown. This paper is the first attempt to apply a difference-in-difference method to investigate how a specific green traffic policy (in our case, the green traffic pilot cities program) affects air quality. The estimates show that the pilot program is associated with consistent reductions in annual concentration of pollutants. In pilot cities of China, the annual concentration of SO 2 , NO 2 and PM 10 decrease by 10.71 percent, 11.26 percent and 9.85 percent, respectively, after the implementation of the green traffic pilot cities program. The results show that the green traffic pilot has a noticeable improvement on air quality of the pilot cities, implying that government intervention has a positive influence on pollution prevention in the transport sector. Moreover, the green traffic system construction can be popularized in other cities to mitigate air pollution. View Full-Text
Keywords: air pollution; green traffic polices; quasi-natural experiment; difference-in-difference air pollution; green traffic polices; quasi-natural experiment; difference-in-difference
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Qiu, L.-Y.; He, L.-Y. Can Green Traffic Policies Affect Air Quality? Evidence from A Difference-in-Difference Estimation in China. Sustainability 2017, 9, 1067.

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