利用元胞自动机对交通流进行模拟，具体模拟某一特定车流密度下的（车流密度由用户设定）单、双车道交通流运行状况，并计算平均速度、换道频率、车流密度等参数。-To take advantage of cellular automata to simulate the traffic flow, the specific simulation under a particular density (density is set by the user), the running status of two-lane traffic flow and calculate the average velocity, frequency and density of the lane changing parameters.