环形交叉口信号控制方法的设置条件分析 

作者:董瑞娟 张卫华

(合肥工业大学 交通运输工程学院,合肥 230009)
     摘要:在对单重与双重信号控制环形交叉口车辆运行特性进行分析的基础上,采用停车线法推导出单重与双重信号控制环形交叉口的通行能力计算公式。其中单重信号控制环形交叉口通行能力分无冲突时间和冲突时间两部分进行分析推导,双重信号控制环形交叉口通行能力是在停车线法基础上考虑了环道空间停放能力进行分析推导的。而后从通行能力的角度对比分析推导环形交叉口设置不同信号控制方式的条件,并计算出,在不同环岛半径、相位绿灯时间以及左转到达率的条件下信号控制方式选择的边界条件,为环形交叉口控制方式的选择提供参考依据。
    关键词:环形交叉口;通行能力;单重信号控制;双重信号控制;冲突点

The setting conditions of roundabout under different signal control methods

Dong Ruijuan  Zhang Weihua 

(School of Transportation Engineering, Hefei University of Technology, Hefei 230009)

    Abstract: Based on the operational characteristics of vehicles at roundabout, it deduced the roundabout capacity formula of single and dual signal control in the stop line ways,in which the single signal control capacity was deduced from no conflict time and conflict time respectively, based on stop line way the capacity formula of dual signal control considered the ring road parking capacity. Then, comparatively analyze the conditions of implementing single or dual signal control from the perspective of capacity. And solve out the critical conditions of control mode selection under different radius of island ring, green time of phrase and flow rate of left-turn, which provide evidence for signal control mode selection of roundabout.

    Key words: roundabout; capacity; single signal control; dual signal control; conflict point