基于Paramics的城市道路复杂交叉口信号控制策略优化研究

Optimization of Urban Intersection Sinal Control Based on Paramics Micro-simulation Software

基于微观交通仿真平台Paramics,提出了一种针对城市交通路网中复杂交叉口信号控制策略效率评价系统的理论框架与实现方法。作为应用实例,以广州市海珠区的某复杂交叉口为研究对象,通过建立其几何精确的CAD模型,进行现场交通调查获取真实OD的数据,进而建立其微观交通仿真模型。最后,通过加载不同的信号控制方案(包括现行的方案),并仿真分析各方案的运行效率,从理论上寻求最优的方案。实际应用结果表明,所建立的基于微观仿真的城市交叉口信号控制优化方法,能方便、有效、低成本地应用于实际交通工程中,为此类城市交通复杂问题的解决提供有益的理论参考。

A microscopic simulation model is developed to evaluate the traffic control strategies efficiency of the urban intersections,based on Paramics the simulation software.A case study of an intersection in Haizhu District of Guangzhou City is presented by using the above method.The CAD model of the intersection is built up according to the actual scale and the OD data is based on a continuous site detection.Several signal control strategies including the actual one are applied on the intersection model to test and their efficiency individually by running the simulations.By comparing their simulation results,the optimization is determined.Results of the case shows that the microscopic model developed can be efficiently and conveniently applied to actual transportation engineering to help solving the optimization problem of urban intersection sinal control.