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Chin. Phys. B, 2017, Vol. 26(10): 108901    DOI: 10.1088/1674-1056/26/10/108901

Effects of rainy weather on traffic accidents of a freeway using cellular automata model

Ming-Bao Pang(庞明宝), Bo-Ning Ren(任泊宁)
School of Civil and Transportation, Hebei University of Technology, Tianjin 300401, China

The aim of this work is to investigate the influence of rainy weather on traffic accidents of a freeway. The micro-scale driving behaviors in rainy weather and possible vehicle rear-end and sideslip accidents are analyzed. An improved CA model of two lanes one-way freeway is presented, where some vehicle accidents will occur when the necessary conditions are simultaneously satisfied. The characteristics of traffic flow under different rainfall intensities are discussed and the accident probabilities are analyzed via the simulation experiments by using variable speed limit (VSL) and incoming flow control. The results indicate that the measures are effective especially during heavy rainstorms or short-time heavy rainfall. According to different rainfall intensities, an appropriate strategy should be adopted in order to reduce the probability of vehicle accidents and enhance traffic flux as well.

Keywords:  cellular automata (CA) model      freeway      rainy weather      rear-end      sideslip  
Received:  20 April 2017      Revised:  14 June 2017      Accepted manuscript online: 
PACS:  89.40.Bb (Land transportation)  
  02.60.-x (Numerical approximation and analysis)  

Project supported by the National Natural Science Foundation of China (Grant No. 50478088) and the Natural Science Foundation of Hebei Province, China (Grant No. E2015202266).

Corresponding Authors:  Ming-Bao Pang, Bo-Ning Ren     E-mail:;

Cite this article: 

Ming-Bao Pang(庞明宝), Bo-Ning Ren(任泊宁) Effects of rainy weather on traffic accidents of a freeway using cellular automata model 2017 Chin. Phys. B 26 108901

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