摘要
为解决城市道路信号交叉口全红清空时间设计方法输入条件改变、适用范围与精细化不足等问题,文章基于高精度、细颗粒度的视频轨迹数据,提出了一种考虑机非混合行驶的全红清空时间自动化设计方法。首先,基于交通冲突理论,以视频轨迹数据为输入识别并分析相位切换期各类交通流的冲突关系;然后,建立全红清空时间矩阵计算方法,以矩阵中的最大清空时间作为相位切换期全红清空时间的设定值,为非机动车信号灯设置、交叉口渠化设计提供支持;最后,以昆山市博士路─观林路交叉口为实例,采用实际视频轨迹数据进行算例分析,构建仿真模型来测试全红清空时间设计方案的有效性。研究结果表明:文章所提出的设计方法可以实现信号交叉口相位切换期间的全红清空时间精细化,适用于交通流量较低、机非混行现象明显的大规模交叉口;新的数据输入条件可以赋能于信号交叉口常态化的全红间隔时间的设计与复核。
To address the issues of changing input conditions,limited applicability,and insufficient refinement in existing design methods for full-red clearance time at urban road signalized intersections,this paper proposes an automated design method for full-red clearance time that considers mixed motorized and non-motorized traffic flow.Based on high-precision,fine-grained video trajectory data,the method first identifies and analyzes traffic conflicts during phase switching using traffic conflict theory.It then establishes a full-red clearance time matrix calculation method,setting the maximum clearance time in the matrix as the full-red clearance time for phase switching.This approach supports the configuration of non-motorized vehicle signal lights and intersection channelization design.Finally,the method's effectiveness is verified through a case study at the Boshi Road-Guanlin Road intersection in Kunshan,using actual video trajectory data and simulation models.The results show that the proposed method can achieve refined full-red clearance time during phase switching,is suitable for large-scale intersections with low traffic volume and significant motorized/non-motorized mixed traffic,and the new data input conditions can enhance the design and review of regular full-red interval times for signalized intersections.
作者
王明炯
WANG Ming-jiong(Shanghai Urban Construction Design&Research InstituteCo.,Ltd.,Shanghai 200125,China)
出处
《中国市政工程》
2025年第1期71-75,147,共6页
China Municipal Engineering
关键词
城市交通
信号控制优化
车辆轨迹
全红清空时间
混合交通流
urban traffic
signal control optimization
vehicle trajectory
all-red clearance time
mixed traffic flow
