Simulating coherent flow with cellular automaton model

At present, different viewpoints and theories are put forward on divisions and transitions of traffic states in highway, for which decide the fundamental properties of traffic flow. Coherent-moving state, among these states, was firstly proposed in Helbing's paper [1] to discuss the hypothetical steady states in mixed traffic flow in highway traffic. Since then, possible explanations on existence, stability and transition of coherent-moving state have been proposed in other research. In the paper, fast simulation and scenario reproduction in cellular automaton model are taken to test and verify those assumptions. A two-lane highway scenario with variety of vehicle parameters is built to reproduce the situation where coherent-moving phenomenon is likely to occur. At last, according to the simulation results, we bring forward our explanations on coherent-moving state which may be helpful on further study.