Safety Assessment for Integrated Transportation Hub Based on Variable Weight Fuzzy Petri Net

In view of the important position of integrated transportation hub in urban traffic system, assessing the safety state more rapidly and accurately is of great significance for the security of integrated transportation hub. This paper discriminates the key factors that influencing the hub safety from five aspects: human factors, equipment factors, pedestrian facilities, traffic organization, and environmental factors. On the basis of using AHP to determine the constant weights of different indexes, the weights were altered according to the index safety states. An integrated transport hub security state assessment model was established based on variable weight fuzzy petri net, which makes the conclusion more objective and precise. Formal reasoning algorithm was given to simplify the reasoning process. In order to verify the validity of the model, a certain integrated transfer hub was taken as an example and the evaluation result indicates that the risk level of the hub is safe.