Freeway Traffic Flow 3d Simulation Platform

With the rapid development of ITS, people regard the traffic simulation technology more and more highly. The traffic flow system, which has the characteristic of complexity, dynamic, and random, is a big system. The software must have the enough nimble parameter and the interactive control, to provide the scene which has highly feeling of immersion. At present, there is no domestic mature expressway simulation platform which can suit our country's traffic flow. Therefore this article proposed a constructer of expressway traffic flow simulation system, to build a distributed platform which is three-dimensional, and the platform is composed of the simulation layer, the control layer, the scene layer. The advanced theory of computer technology such as fuzzy theory, the neural network, genetic algorithm, three dimensional graphics algorithm have been used to formulate the platform. In this paper, the following model, changing driveway model and the establishment of motion and stable event calculation were designed to combine users own traffic knowledge with platform easier. Therefore, users can broaden their imaginations and creativities for further advancement with the help of those models. As the assistance function, the platform also may take other highways software's interface of simulation.For traffic flow simulating, we can divide it into two parts: microcosmic and macrocosmic. Knowledge which relate to this aspect are very abroad, the most difficult work is microcosmic simulation of traffic flow. It is difficult to find a right way to analyze the car send out model, the following model and the changing driveway. This thesis use the method of object oriented to build the structure of the platform, and provide some way to create the data of distributing. It has implemented some key technology of combine the scene of 3D and the math algorithm, the structure of system about event detect is also finished. For build a platform has the characteristic of 3D, distributed, highly feeling of immersion, it is based on advanced computer technology. The platform can be used to simulate the scene of traffic flow event and give the user inspire to create new model, use the visual C++ and OpenGL to write the algorithm and model, All of this have made a good foundation of continuing the research job of traffic flow simulation lately.