Macrolevel Traffic Safety Longitudinal Comparison in Shanghai, China
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 147, Issue 10
Abstract
To ensure improvements are made in the parts of the city currently most prone to crashes, this study conducted a 2009–2016 longitudinal comparison of the traffic safety in Shanghai at the level of the traffic analysis zone (TAZ). The police-reported crashes occurring in 2009 and 2016 within the downtown areas of Shanghai were examined to acquire a basic knowledge of the traffic safety development and spatial distribution characteristics of crashes. Considering that different zones within a city show significant heterogeneity in socioeconomic indicators, road characteristics, traffic patterns, and land-use features, a macrolevel traffic safety model was developed to capture the relations between the aggregate number of crashes and the various influencing factors. The study also identified hot zones for the two years to demonstrate the zonal changes in crash frequency. Results show that crash frequency had shifted significantly in suburban areas of Shanghai, with many hot zones having moved from the central areas of the city to suburban areas. Urban planners and decision makers can use this study to better understand the changes in crash distribution and contributing factors, permitting better targeted safety countermeasures.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are proprietary or confidential in nature and may only be provided with restrictions.
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Crash data were obtained from the Traffic Police Corps of Shanghai Public Security Bureau. The data are confidential and require permission for specific research purposes.
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Other data are owned by the corresponding institutions.
Acknowledgments
The authors are grateful to Barbara Rau Kyle for her helpful edit. This study was sponsored by the International Science & Technology Cooperation Program of China (2017YFE0134500), the Science and Technology Commission of Shanghai Municipality (18DZ1200200), and the 111 Project (B17032).
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Published In
Journal of Transportation Engineering, Part A: Systems
Volume 147 • Issue 10 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jun 25, 2020
Accepted: Apr 29, 2021
Published online: Jul 23, 2021
Published in print: Oct 1, 2021
Discussion open until: Dec 23, 2021
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