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Identification Model for Risk Level of Traffic Accident Section Based on Extension Science
ZHANG Wenhui, MA Jun, LUO Wenwen, LI Decai, LI Zhuo
2016, 35(1):
107-110.
DOI: 10.3969/j.issn.1674-0696.2016.01.21
In order to reveal the variation characteristics of risk level of traffic accident section, the process of formation and removal of accident scene was
divided into four periods, which included the police responding period, the scene safety facilities setting period, the scene exploration and rescue period as well as
the safety facilities removing period. 5 risk measurement indexes were selected, including the traffic flow, the information dissemination, the scene disposal, the
speed management and the drivers’ response, and the weight of the indexes was determined by the product scale method. Based on the theory of matter-element, extension
set and correlation function, the classical domain, joint domain and the matter-element to be evaluated of traffic accident section were determined, and the
identification model of risk level of traffic accident section was established. Taking a four-lane highway accident scene for example, the proposed model was used to
determine the risk level of each period, and there were four periods. The first period was extremely dangerous, the second one was moderately dangerous, the third one
was basically safe and the last one was slightly dangerous. The results show that the evaluation result is objective and the established model can be used to identify
the risk level of traffic accident section; the time-varying characteristics of risk obtained can provide theoretical reference for risk identification and control.
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