交叉口及路段拥挤界定研究

Research of Defining Congested Intersections and Sections

当前,我国城市交通供需矛盾日益突出,城市道路及交叉节点的拥堵界定及拥堵评价具有重要意义。通过对交叉口及路段拥堵概念的提出,分析了国内外相关研究的成果,提出适合我国城市交通运行特征的交叉口及路段拥堵界定方法。对交叉口及路段服务水平的评价方法进行了归纳总结,通过实例研究了典型交叉口的延误仿真评价,并对交叉口与路段拥堵的相互作用机理进行了初步分析。研究成果对我国城市交通运行的评价和改善具有理论意义和实践意义。

The contradiction between urban traffic supply and demand is becoming increasingly prominent. The definition and evaluation of congestion on urban roads and intersections are of significance. On the basis of the concept of congestion on intersection and road, the related researches at home and abroad were revitured, and the road and intersection congestion determination method suitable for our urban traffic operation was proposed. The evaluation method of road and intersection service level was summarized, the typical intersection delay simulation was studied through case, and the congestion＇s interaction mechanism between roads and intersection was discussed. The research results have theoretical significance and practical significance to our urban traffic operation evaluation and improvement.