关键词: 智能交通, 信号交叉口, 自行车群, 通行阶段, 聚类分析

Abstract: In China, managing mixed traffic flow consisting of mobile, bicycle, and pedestrians at signalized intersection is one of the key measures to ensure a good traffic operation. Focusing on the bicycle groups at signalized intersection, the video capture technology is used to collect their passing characters at two intersections respectively in Beijing and Tianjin city. Through the K-means cluster analysis method, three criterions are selected to divide the passing stage: the average speed, width and length of bicycle groups at the two signalized intersections. The passing stage can be divided into three stages: gradually spreading stage, the expanding stage, and the gradually shrinking stage.

Key words: intelligent transportation, signalized intersection, bicycle groups, passing stage, cluster analysis