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In recent years, rapid development, China's automotive industry has made a significant contribution to the national economy and social development. At the same time, a series of problems of traffic congestion, air pollution, energy crisis, security incidents, also appears. At this stage, car ownership in China increased dramatically, which makes the road transport, especially in urban traffic, traffic-intensive and non-professional characteristics of the driver showing the real traffic environment, from the process of the car driving - cars - Environmental Systems various factors is very complex, the car driving process has a high-speed, dangerous, complex, based on this case, the virtual reality technology is applied to the study of the urban road traffic simulation has become a very effective technical means, it can be realistic simulate various road environment, weather conditions, and real-time access to vehicle handling and state of motion data, analysis of the technical performance of the car, which can save a lot of natural resources, has a high economic value. The paper combines research on virtual reality technology, traffic flow simulation method, based on the characteristics of the traffic flow in the real environment to realize the simulation of vehicle traffic behavior in the visual system, the realistic traffic environment driving safety and energy conservation objective interference factors reflected in the visual to study simulation environment for safety and energy-saving driving can also be based on this platform, driver safety and energy saving driving behavior training. First, determine the platform for the overall development program, to build the system software and hardware platforms, and select advanced Multigen Creator, a fast 3D city modeling tools for simulation modeling of urban road traffic environment according to system requirements. Pointed out that in the modeling process should follow the principles of the model of the establishment and organization of the scene, along with a brief exposition scene modeling, analysis should be noted that in the process of the establishment of a real-time simulation scenario model. The scene of the modeling process, the use of a range of advanced modeling techniques, such as LOD techniques, texture mapping technology, instances of technology and external references, to achieve a realistic visual effects, and also reduce system resource consuming, improve the operation of the system performance. Scene database After the completion of real-time rendering of scenes with OpenGVS and drive, and to explore the import scene in the process of developing simulation program, the cameras follow, collision detection and other key technologies in the scene to join a random vehicle and designed to achieve a random vehicle The intelligent traffic behavior control. In traffic simulation platform developed in the application of modeling techniques and optimization methods discussed in this paper, to achieve a view of urban traffic simulation platform developed at the same time meet the immersion of the system, the requirements of real-time and interactive, made more good simulation results.
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