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Have mixed traffic restrictions improved air quality in different regions?

Author

Listed:
  • Zhang, Xiaodong
  • Yang, Qi
  • Xu, Xiaoqing
  • Sun, Qipeng
  • Mao, Xinhua

Abstract

Governments have implemented many regulations to solve traffic congestion and pollutant emissions. Traffic restriction (TR) policy is the most common and widely used traffic regulation. However, it is difficult to alleviate traffic pollution through TR policies. Only a few studies focus on TR policies in multiple cities. In this paper, we classify traffic restrictions by geographical factors and evaluate the impact of different policies based on PSM-DID first. Then, we classify the mixed restrictions and test their effects on air pollution. The results show that TR policy improves air quality regardless of the season. Moreover, the effect of TR policy is not affected by the superposition of the type of traffic restriction. For cities implementing the same TR policy, geographic factors can lead to different outcomes. This finding provides a reference for governments in reducing air pollution.

Suggested Citation

  • Zhang, Xiaodong & Yang, Qi & Xu, Xiaoqing & Sun, Qipeng & Mao, Xinhua, 2024. "Have mixed traffic restrictions improved air quality in different regions?," Transport Policy, Elsevier, vol. 150(C), pages 139-148.
    • Handle: RePEc:eee:trapol:v:150:y:2024:i:c:p:139-148
    DOI: 10.1016/j.tranpol.2024.03.002
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