【摘要】 针对我国现有道路交通条件下典型的信号控制交叉口,对不同车道宽度、转弯半径的右转车道的饱和车头时距进行现场测定.在确定和排除了数据中的异常值后进行数据分布分析,结果表明右转车道饱和车头时距服从对数正态分布或正态分布.考虑右转车道宽度、转弯半径的影响,给出了右转车道饱和流量的回归计算模型.比较结果表明,所给计算模型比美国HCM2000(Highway Capacity Manual 2000)更符合国内的实际情况.更多还原

【Abstract】 The study focuses on saturation time headways of right-turning lane at typical intersections in China.Saturation time headways with different lane widths and turning radiuses were measured on the spot and abnormal data were identified and eliminated.Analysis result shows that saturation time headways on right-turning lane are normal or lognormal distributed.A mathematical regression model on right-turning saturation flow was then established with the effect of lane width and turning radius being taken into consideration.Compared with the methods provided in Highway Capacity Manual 2000(HCM2000),the model is more suitable in China.更多还原