Cellular automata ( ca ) are mathematical idealizations of dynamical systems in which space , timea and states are dicrete . it ' s parallel and simple for computation , so it can simulate variable complex phenomena . resently , ca have become used for modeling traffic flow 本文以元胞自動機理論為基礎,根據已有的交通流ca模型建立幾個新的模型,研究它們的交通流特性。