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重点阐述了对环形交叉口车辆通行的单进口道顺时针依次放行控制、单进口道顺时针依次放行控制+次车流交织、多进口道放行协同环道控制等3种控制方法。解析了在不同信号控制方法情况下的时空战略参数信号周期和中心岛半径对通行能力的影响规律。其研究成果对完善信号控制环形交叉口理论体系及为无控制环形交叉口的改造和环交信号控制方式的选择等提供了技术支持,具有重要的应用价值。
This paper mainly elaborates three kinds of control methods: clockwise single-inlet control, single-inlet clockwise control + secondary flow interweaving and multi-inlet bypass coordination loop control for roundabout vehicles. The influence of signal period and center island radius on traffic capacity under different signal control methods is analyzed. The research results provide technical support for improving the theoretical system of signalized roundabouts and for the selection of uncontrolled roundabouts and the selection of control signals for cyclic overpasses, which have important application value.