信号控制交叉口直行待行区对通行能力的影响研究  

Research on the Influence of the Waiting-Area for Through Vehicles at Signalized Intersection on Traffic Capacity

作　　者：张南[1] 闫宇 ZHANG Nan;YAN Yu(School of Transportation and Logistics,Southwest Jiaotong University,Chengdu Sichuan 611756,China;China Xiong'an Group Transportation Co.,Ltd.,Baoding Hebei 071700,China)

机构地区：[1]西南交通大学交通运输与物流学院,四川成都611756 [2]中国雄安集团交通有限公司,河北保定071700

出　　处：《城市交通》2023年第3期90-97,共8页Urban Transport of China

摘　　要：有关道路交叉口直行待行区对通行能力影响的研究不够完善和全面,在实际应用中存在诸多问题。分析直行待行区设置的目的和条件,基于直行待行区停止线前移的特性,考虑启动波对启动损失时间的影响,完善了损失时间和清空时间的计算方式。在停车线法计算通行能力的基础上进行修正,构建了直行待行区交叉口进口道的通行能力模型,量化直行待行区对通行效率的影响。基于实例交叉口视频识别数据,通过轨迹平滑化和缺失轨迹补齐方法获得完整车辆轨迹,并获取交通参数的实际数值,保证了模型结果的实际意义。最后运用仿真软件对通行能力模型结果进行验证,与类似模型进行对比。结果表明:构建的通行能力模型模拟真实情况的准确性较高;由于直行待行区对通行过短对通行能力的优化效果较弱,建议在条件允许的情况下尽量将直行待行区设置到最大长度。The research on the influence of the waiting-area for through vehicles at road intersections on traffic capacity is not comprehensive and complete and there are many problems in the practical applica-tions.In view of this problem,the purpose and conditions of setting up the waiting-area for through vehi-cles are analyzed.Based on the characteristics of moving the stop line of the waiting-area for through vehi-cles forward,considering the impact of the starting wave on the startup loss time,this paper improves the calculation method of the lost time and the clearing time.On the basis of the improved calculation of the traffic capacity by the stop line method,the paper develops a traffic capacity model for the waiting-area for through vehicles at the intersection entrance,which can quantify the impact of the waiting-area for through vehicles on traffic efficiency.Based on instance-based intersection video recognition data,the complete ve-hicle trajectory is obtained through trajectory smoothing and missing trajectory completion,and the actual value of traffic parameters is obtained,which ensures the practical significance of the model results.Final-ly,the simulation software is used to verify the results of the traffic capacity model,and compared with similar models.The results show that the traffic capacity model has a high accuracy in simulating real situa-tions.Due to the weak optimization effect of the waiting-area for through vehicles on traffic capacity when it is too short,it is suggested that the maximum length for the waiting-area for through vehicles should be set as far as possible if the conditions permit.

关 键 词：交通设计 直行待行区 停车线法 通行能力模型 信号控制交叉口 视频轨迹数据 

分 类 号：U491.114[交通运输工程—交通运输规划与管理]