Determination of Membership Degree in Risk Assessment of Transportation Process

In the road passenger transportation information management system, the safety of the transportation process needs to be fuzzy evaluated before the departure of passenger vehicles. The data involved in the evaluation include data from many sources that are aggregated into the information management system through the Internet and wireless communication. In fuzzy evaluation, the determination of the membership function is important. A fuzzy evaluation method is adopted in the risk evaluation of road passenger transportation process. The shape of the membership function curve is observed by setting different values of the parameters in the membership function. According to the establishment principle of the membership function and the actual situation of the risk assessment of the transportation process, the parameters of the appropriate membership function are determined, and the membership function of each evaluation level of the transportation process is finally obtained.