关键词: 交通流, 可视化, 宏观模型

Abstract: In the simulation of large cities’ traffic situation, the macroscopic model compared to the microscopic model, has advantages of high efficiency, clear physical meaning, but lack of vehicles in a detailed description of each moment. To make the macroscopic model of traffic simulation display more intuitive, combined with the update method of microscopic model, this paper puts forward the visualization method based on the macroscopic model. The vehicle’s initial position and speed are obtained by the road vehicles’ initial density; then the vehicle information is updated according to the macroscopic road speed, to make the density of macro-sections consistent with the microscopic vehicle current density. This method can give the vehicles’ motion of each time in the macroscopic model, and add the microscopic details. A case study of setup planning is presented to verify the feasibility of the method.

Key words: traffic flow, visualization, macroscopic model