机构地区: 华南理工大学
出 处: 《同济大学学报(自然科学版)》 2012年第4期559-563,共5页
摘 要: 针对美国HCM 2000基于车道组计算信号交叉口控制延误方法中对同一车道组内各车道使用不均衡情况的处理方式与实际情况不符合的问题,依托交叉路口实例分析了基于车道组和基于车道两种控制延误计算方法的差异,且对Webster延误计算公式以及排队论模型进行了探讨,分析了造成此差异的原因,得出了基于车道组和基于车道的两种控制延误计算方法的适用条件,并对普遍采用的控制延误计算方法及计算工具的开发提出了改进建议.研究成果对于准确计算信号交叉口控制延误、指导相应的辅助计算工具开发具有参考价值. The United State Highway Capacity Manual 2000 applies lane group based model to calculate the control delay, and the lane utilization factor to handle the unequal lane utilization by adjusting the lane group saturation flow rate. This paper presents an investigation of the applicability of different control delay calculation methods. First, control delay calculation difference is identified for lane group-based method and lane-based method through a case study. The cause of the calculation difference is discovered by reviewing Webster' s delay model and queuing theory, and the application conditions are defined for both methods. Theresults and suggestions can be used to improve the accuracy of intersection control delay calculation, and referenced by signal timing software design.