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With the development of social economy and the advancement of people′s living standard, the transportation becomes the people′s focus more and more, and becomes the important factor that relates to the national economy and the people′s livelihood. No doubt, whether the transportation system is modernized, or whether the managing level of the transportation system is advanced, is one of the important signs of a country being thriving and flourishing. Though all countries have devoted huge funds to the traffic construction, the speed of the traffic construction lags the increase of the traffic demand. With the increase of the number of automobiles in the city, traffic jam, traffic environmental pollution and traffic accidents frequently happening are more and more seriously affecting the development of economy and society in countries all over the world.In our country, numerous civil population and diversiform traffic tools aggravate the acurity of traffic problems.At present, the traffic flow in our national cities is generally mixed traffic flow which consists of passersby, non-motor vehicles and motor vehicles.As for motor vehicles, they are also diversiform and they are different in capability and size. For example, there are motorcycles, cars, passenger cars and buses in them.It can be anticipated that because of numerous population, underdeveloped economy, the imbalance in the development of economy and biggish difference in dweller′s income in our country, the complicated mixed traffic flow will persist for a long time in our national cities. Therefore, how to scientifically administer and control mixed traffic flow is a problem that needs imminently to solve.In recent years, the domestic and overseas experts have attached importance to traffic problems and have presented all kinds of traffic models, in which the studies of the cellular automaton models for traffic flow have been widely concerned.Cellular automaton is a mathematical model in which time, space and variables are all discrete.It has so many predominant characteristics—for example, its clear physical pictures, being completely parallel, having no interceptive errors and having no computational errors and so on—that it is a effective tool by which to study nonlinear complicated systems.In this dissertation, based on the existing research on the cellular automata models for traffic flow, several models for traffic flow with mixed vehicles in accordance with real traffic in
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