远引调头对下游交叉口通行能力的影响
发布时间：2018-08-05 19:00
【摘要】：为了准确分析在主干路上设置中央隔离栏以后,支路原有直接左转的车辆对下游交叉口的影响,以交通流理论为基础,以交叉口通行能力为评价指标,建立了车头时距与通行能力之间的关系模型。研究结果表明:对于信号交叉口,当调头流量的百分比为21%,调头车辆的修正系数为0.95,即左转专用车道的通行能力降低了5%时,尽管交叉口通行能力有所降低,但是远引调头的运行效率将比直接左转的高,此时设置中央隔离栏对提高主干路交通运行效率具有积极意义;对于无信号控制交叉口,在主干路流量小于850 pcu/h时,不同主干路车头时距对应的支路的通行能力比较接近,当主干路流量大于1 250 pcu/h时,不同的主干路车头时距对应的支路的通行能力差异较大,即不同的主干路车头时距对支路的通行能影响较大。
[Abstract]:In order to accurately analyze the influence of the original left turning vehicle on the downstream intersection after the main road is set up on the main road, based on the traffic flow theory and the traffic capacity of the intersection as the evaluation index, the relationship model between the head time distance and the capacity is established. The percentage of the flow rate is 21%, the correction coefficient of the turning vehicle is 0.95, that is, the capacity of the left turn special lane is reduced by 5%, although the capacity of the intersection is reduced, but the operation efficiency of the far diversion will be higher than that of the direct left turn. Without signal control intersection, when the main road flow is less than 850 pcu/h, the traffic capacity of the corresponding branch road is close to the corresponding branch road. When the main road flow is more than 1250 pcu/h, the traffic capacity of the different main road headway is different from the corresponding branch road, that is, the capacity of the different main trunk road distance to the branch road is different. It has great influence.
【作者单位】： 昆明理工大学云南省高校智能交通系统工程研究中心;昆明理工大学交通工程学院;玉溪市公安局交通警察支队;
【基金】：国家自然科学基金项目(61364019)
【分类号】：U491.23
[Abstract]:In order to accurately analyze the influence of the original left turning vehicle on the downstream intersection after the main road is set up on the main road, based on the traffic flow theory and the traffic capacity of the intersection as the evaluation index, the relationship model between the head time distance and the capacity is established. The percentage of the flow rate is 21%, the correction coefficient of the turning vehicle is 0.95, that is, the capacity of the left turn special lane is reduced by 5%, although the capacity of the intersection is reduced, but the operation efficiency of the far diversion will be higher than that of the direct left turn. Without signal control intersection, when the main road flow is less than 850 pcu/h, the traffic capacity of the corresponding branch road is close to the corresponding branch road. When the main road flow is more than 1250 pcu/h, the traffic capacity of the different main road headway is different from the corresponding branch road, that is, the capacity of the different main trunk road distance to the branch road is different. It has great influence.
【作者单位】： 昆明理工大学云南省高校智能交通系统工程研究中心;昆明理工大学交通工程学院;玉溪市公安局交通警察支队;
【基金】：国家自然科学基金项目(61364019)
【分类号】：U491.23
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