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Discussion on the Influence of Weather on Expressway Traffic Accidents in time based on Survival Analysis Model

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DOI: 10.23977/AICT2020024


Chen Chen, Yishuai Tian

Corresponding Author


to explore the influence of weather on highway traffic accidents in time span, 2219 pieces of effective traffic accident data of Kunshi Expressway in 2009 and 2012 were extracted in this paper. A survival analysis model is established to analyze the traffic accident data under sunny, rainy and cloudy days, and its risk function is discussed. The results show that 17 hours is the high incidence period of accidents, and 23 hours is the period with the highest risk of traffic accidents. Rainy days have the greatest impact on traffic accidents, followed by cloudy and sunny days. Based on the survival analysis model, this paper puts forward relevant suggestions for traffic management.


Survival analysis; Traffic accident risk function; Weather impact

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