Abstract
The study of crowd scenes has become an interesting research area. Crowd flow collision is a critical problem since it may cause injuries or death to people. Current research methods on crowd flow collisions are only confined in 1D and 2D straight line directions. In this paper, we propose a 3D simulation for crowd flow collisions in different directions within an entry and an exit at a gate. The simulation efficiency is decreased when a number of agents is increased. The simulation frames per second are dropped below 35 when the characters are more than 100.