关键词: 交叉口群, 动态划分, 路网OD路径, 路径关联性, 路段关联性

Abstract: As the basic unit of traffic coordinated control in the urban road network，intersection-group is composed of some intersections with strong traffic relevance，and its scope is related to performance indexes of traffic coordinated control.Firstly，based on the improved Whitson model of link relevance，the model of path relevance of adjacent intersections is put forwards，which takes the origin-destination（OD） path distribution in the traffic network into consideration.Secondly，hierarchical clustering method is applied to intersection-group dynamic division based on calculated results from the model of link relevance or path relevance.Lastly，an example is given out to verify the method by simulation and division schemes are comparatively analyzed.The research results demonstrate that dynamic division of intersection- group considering the OD path distribution in road network could reduce the division times for main OD path，and thus decrease the total delay and stops in road network.

Key words: intersection-group, dynamic division, OD path in road network, path relevance, link relevance