摘要
基于城市快速路交通流实测数据,分析了常发性交通拥挤的特征。划分了6种交通流状态,对其进行了定性和定量分析,进而提出了“状态跳转”的概念和判别方法,揭示了拥挤形成过程;根据交通拥挤的形成原因将其分为主动和被动式。介绍了用时空速度变化图寻找拥挤源头以及选择交通控制措施的方法。
Based on real-detected data on urban expressway, the feature of recurrent congestion was analyzed. Firstly, six traffic states were classified with a qualitative and quantitative analysis, and the definition and identification method of ＂state transition＂ were presented to reveal the course of congestion. Then, recurrent traffic congestion was classified as active style and passive style according to the formation. Finally, spatial temporal speed figure was introduced to help find the headstream of congestion, and the approach to selecting traffic control strategies was also introduced.
出处
《交通与计算机》
2007年第2期91-94,98,共5页
Computer and Communications
关键词
城市快速路
常发性交通拥挤
状态跳转
拥挤源头
urban expressway
recurrent traffic congestion
state transition
headstream of congestion
