基于时间效益的城市公交专用道设置流量条件

发布时间：2019-03-28 13:25

【摘要】：为了精确分析公交专用道设置临界条件,在基本路段车速模型适用性分析的基础上,引入公交车流量、社会机动车流量、公交车比例等参数,分别建立了改进的混行机动车运行速度模型和设置公交专用道后机动车运行速度模型,并选取单向三车道路段进行实验调查,用采集的数据对改进模型进行标定.运用改进的模型,对公交专用道设置前后车辆运行速度差异性的分析可以发现,随着路段车流量(饱和度)的变化,车辆速度差异的变化呈现无差异、差异变大两个显著的阶段.进而从总出行时间的最小的角度,建立时间效率模型,用于计算设置公交专用道的临界条件.试算结果表明在公交比例较小时公交专用道设置的临界条件低于传统标准,公交比例较大时公交专用道设置的临界条件高于传统标准,公交比例变量的引入有助于细化公交专用道设置的临界条件.
[Abstract]:In order to accurately analyze the critical conditions of bus lane setting, based on the applicability analysis of the speed model of basic sections, the parameters such as bus flow, social motor vehicle flow, bus proportion and so on are introduced. The improved hybrid vehicle running speed model and the vehicle running speed model after setting the bus lane are established, and the one-way three-lane section is selected to carry on the experiment investigation, and the improved model is calibrated with the collected data. Using the improved model, we can find that with the change of road flow (saturation), there is no difference in vehicle speed difference between before and after the setting of bus lane, and the difference of vehicle speed is not different with the change of road traffic flow (saturation). There are two distinct stages in which the difference becomes larger. Then, from the minimum point of view of total travel time, a time-efficiency model is established to calculate the critical conditions for setting up bus lanes. The result of trial calculation shows that the critical condition of the bus lane is lower than the traditional standard when the bus proportion is small, and the critical condition of the bus lane setting is higher than the traditional standard when the bus proportion is large. The introduction of bus proportional variable is helpful to refine the critical conditions of bus lane setting.
【作者单位】：东南大学交通学院;桂林电子科技大学建筑与交通工程学院;
【基金】：国家自然科学基金重点项目(51238008);国家自然科学基金资助项目(51268006) 桂林电子科技大学广西信息科学实验中心资助项目(20130320)
【分类号】：U491.17

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