基于GIS环境的一种混合车辆路径诱导策略

论文首先在GIS环境下按照城市道路交通流特性建立了动态交通路网模型,并以此为基础设计了一种混合道路交通路径诱导策略。该策略包括两种不同的路径诱导模式:全局静态诱导和局部动态诱导。通过车辆路径诱导系统中的短时行程时间预测模块,针对城市道路交通流特性的突然改变加以判断,然后根据判断结果决定在两种诱导模式之间进行有效的切换。基于VC++和MapX控件的仿真试验表明,采用这种混合道路交通路径诱导可以较好满足系统的实时性和最优性要求。

A Kind of Hybrid Route Guidance Strategies Based on GIS Environments

This paper first models the dynamic traffic net according to the urban traffic flow characters under the GIS environment,and proposes a kind of hybrid route guidance strategy which including two different route guidance approaches,globe static guidance and local dynamic guidance.The short-term travel time forecasting module in the vehicles route guidance system judges the sudden changes of the traffic flow characters,and then switching the route guidance approaches according to the results.Simulation results using VC ,MapX component and database technology show this hybrid route guidance strategy can satisfy the system demand of both real-time and optimum.