Simulation of pedestrian behaviors based on an improved floor field cellular automaton model under attractive incidents

The study of pedestrian dynamics is very significant for promoting pedestrian traffic management and optimizing the layout of public facility in comprehensive transportation hubs, markets, theaters etc. In order to simulate and reproduce pedestrian behaviors under attractive incidents, an improved floor field model is proposed in this paper. This improved model is composed of static floor field, dynamic floor field and the new proposed attractive field, which takes into account the attractive degree of incident, view distance of onlooker, and pedestrian's safe psychological distance. The transition probability of pedestrian is decided by the interaction of static floor field, dynamic floor field and attractive field. Besides, pedestrian movement state is divided into three types under attractive incidents: walking, staying, and leaving, which can depict the pedestrian behaviors of gathering, looking and dissipation. The experiment results show that our proposed model can reproduce the onlooking processes and capture the typical characteristics of torus-shaped phenomenon under attractive incidents.