Incidents reduce the capacity of highway, seriously disturb traffic operations, and sometimes easily lead to secondary accidents, especially in situations where traffic volume is heavy. In this research, the characteristics of traffic incidents are analyzed with detailed incident records collected from freeways during various holidays. Accident characteristics, such as accident frequency, severity, accident type, and causes, show different patterns from those of ordinary time. This study finds that traffic volume and accident rate have an exponential relationship when traffic volume is heavy during the holidays. The distribution of accident duration is a left skewed bell-shape curve and P-P probability plot shows that the accident duration distribution follows a lognormal distribution. The findings of this research are beneficial to freeway safety management and traffic control during holidays. They also provide good references for accident prediction and prevention.
Traffic Incident Characteristics Analysis of Freeway during Holidays
The Twelfth COTA International Conference of Transportation Professionals ; 2012 ; Beijing, China
CICTP 2012 ; 2131-2138
2012-07-23
Conference paper
Electronic Resource
English
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