Randomization Rules of 1D Cellular Automaton Traffic Flow Model

The traffic flow model based on cellular automata is developing in resent years. It developed rapidly because that it is easy to model and realize on computer,and can simulate the complex non-linear transportation phenomenon. We study the impact of randomization in the 1D cellular automaton model which is based on the NaSch model.Through the analysis of the fundamental diagram and space-time diagram of Nasch model and VDR model,we obtained that the rule is important for simulating some non-linear phenomenon in real traffic flow.