区域高等级公路网交通状态识别与分析模型研究

A Study on Traffic State Recognition and Analysis Models for Regional High Grade Highway Network

为了在区域内分析高等级路网交通状态,建立了一种区域高等级路网交通状态分析模型。首先分析路网结构并对路段的交通状态进行识别分类,建立在实时交通状态下的区域高等级路网模型;然后基于路网模型运用系统结构分析法建立路网交通状态分析模型,根据不同交通状态分析需求得到不同的交通状态可达矩阵,并对可达矩阵分层分析。实例分析表明:该模型能够有效地判别路网中节点的可达性和连通性,描述路网的交通状态时空变化规律,若通过及时发布信息,出行者可根据不同的信息需求来选择最优路径,避免大范围拥挤,从而提高整个路网的运行效率。

In order to analyze traffic state of regional high grade highway network,how to establish a model for analyzing is researched.The structure of network is firstly analyzed,then the traffic state of segments is recognized and classified.After this,a model of regional high grade highway network is established under the real-time traffic state.Based on this model,another model for analyzing the traffic state of network is established by using the method of system structural analysis.This model can obtain the diffe-rent reachable matrix of the network under different demanded levels of traffic state of segments,then analyze the reachable matrix by hierarchical approach.The example proves that the model can identify the connectivity and accessibility between each pair of nodes in the current traffic state of network and describe the spatial and temporal variation of traffic status of entire network effectively.Through releasing the real-time information timely,the traveler can choose the right path according to different information to avoid congestion,improve the operational efficiency of the entire road network.