Abstract
In view of the preconscious behavior of pedestrian and walking speed differences, a lattice gas model of bi-direction pedestrian flow is established in this paper. According to the characteristics of pedestrian following behavior and preconscious dynamic change in different walking conditions, bi-direction pedestrian behavior model based on dynamic preconsciousness is constructed to study the bias decision-making behavior of pedestrian movement. Through numerical simulation, the influence of regional size, asymmetry and speed deviation on the Bi-direction pedestrian flow is analyzed. Results indicate that dynamic preconscious behavior enhances the stability of the system and reduces pedestrian congestion. The passing behavior of the high-speed pedestrian is the main cause for the congestion in the situation of high density. The speed difference will largely influence the anti-congestion ability of the system, so keeping the unity of the speed and group order would maintain the stability and the anti-congestion ability of the system for the whole system.