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本文在高速公路交通流基本动态模型基础上对平均速度模型加以修正,提出一种改进模型,以期更精确地描述某些复杂道路如城市高速公路的动态交通流,提高交通分析和最优控制设计的精度。作者对一条道路进行了动态交通建模及仿真研究。结果表明,当存在较大的匝道流量冲击或沿途车道数目有改变时,基本模型的误差较大,而改进模型的精度有明显提高。文中还讨论了建模方法、模型检验及模型简化等问题。
This paper modifies the average velocity model based on the basic dynamic model of expressway traffic flow and proposes an improved model to describe the dynamic traffic flow of some complex roads such as urban expressways more accurately and to improve the traffic analysis and optimal control design The accuracy. The author of a road dynamic traffic modeling and simulation. The results show that the error of the basic model is larger when there is a large impact of the ramp flow or the number of lanes along the route, and the precision of the improved model is obviously improved. The article also discusses the modeling methods, model testing and model simplification and other issues.