A modified floor field cellular automata model for pedestrian evacuation simulation

Considering the fact that the interaction among pedestrians in a high-density crowd is asymmetric, accumulative and transferable, we present a modified floor field cellular automata model for simulating the pedestrian evacuation. In this model, the space for evacuation is discretized into smaller cells, every pedestrian is allowed to occupy multiple cells and the interaction among pedestrians is characterized by their own inertia and the forces received or to be imposed on others. By numerical simulation the effects of the pedestrian movement manner and the model parameters on evacuation efficiency are investigated. The results obtained by our modified model are compared with those by the original floor field model.