四相位信号控制交叉口交通延误模型研究
发布时间：2018-10-09 19:29
【摘要】：信号控制交叉口交通延误不仅能够反映出整个道路交叉口及道路网的交通运行状况，而且是对信控交叉口的服务水平及运行效率、现行信号控制配时方案、道路交通设施改善措施的效果进行合理评价的指标。针对目前信控交叉口交通延误模型多只考虑一个信号周期内一个进口道一种运行状态下的交通延误计算，并没考虑各个进口道各个流向交通流状态的差异，加上目前大量的交通延误模型只适用于简单的两相位信号控制交叉口等情形，故本文尝试解决这一问题，提出四相位信号控制交叉口的交通延误计算模型。本文的主要研究内容包括： （1）通过对信控交叉口进口道在非饱和状态与饱和状态下的车辆到达、运行受阻、以及车队离散过程及特征进行详细分析，推导建立四相位信号控制交叉口各个进口道的车辆分别处在初始信号相位或非初始信号相位、非饱和状态或饱和状态的交通延误模型。 （2）在充分考虑信控交叉口各进口道各流向交通流运行特征差异的基础上，利用实际采集的道路交通数据进行算例计算过程演示，验证本文提出的四相位信号控制交叉口交通延误计算模型的可操作性。 （3）选取目前道路交通系统中常用的两种四相位信号控制交叉口进行实例分析。并分别将典型四相位信控交叉口和单口四相位信控交叉口的模型结果与点样本法、HCM2010法的计算结果进行对比分析，，进一步验证了本文提出模型的实用性和准确性。
[Abstract]:The traffic delay of signal-controlled intersection can not only reflect the traffic condition of the whole road intersection and road network, but also the service level and operation efficiency of signal-controlled intersection. Indicators for reasonable evaluation of the effect of road traffic facilities improvement measures. At present, traffic delay models of signal-controlled intersections only consider the calculation of traffic delays in one channel and one operating state in a signal cycle, and do not take into account the difference of traffic flow in each entrance. In addition, a large number of traffic delay models are only suitable for simple two-phase signal-controlled intersections, so this paper tries to solve this problem and puts forward a traffic delay calculation model for four-phase signal-controlled intersections. The main research contents of this paper are as follows: (1) through the analysis of the vehicle arrival, the obstructed operation, the discrete process and the characteristics of the vehicle in unsaturated and saturated state at the signalized intersections, The traffic delay model of the vehicle in the initial signal phase or the non-initial signal phase, unsaturated state or saturated state at each entrance of the four-phase signal-controlled intersection is derived. (2) on the basis of considering the difference of the traffic flow characteristics of each inlet of the signal-controlled intersection, the actual traffic data collected are used to demonstrate the calculation process. The maneuverability of the traffic delay calculation model proposed in this paper is verified. (3) two kinds of four-phase signal control intersections which are commonly used in road traffic system are analyzed. The model results of typical four-phase signal-controlled intersections and single-port four-phase signal-controlled intersections are compared with the calculated results of HCM2010 method, which further verifies the practicability and accuracy of the proposed model.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491
本文编号：2260512
[Abstract]:The traffic delay of signal-controlled intersection can not only reflect the traffic condition of the whole road intersection and road network, but also the service level and operation efficiency of signal-controlled intersection. Indicators for reasonable evaluation of the effect of road traffic facilities improvement measures. At present, traffic delay models of signal-controlled intersections only consider the calculation of traffic delays in one channel and one operating state in a signal cycle, and do not take into account the difference of traffic flow in each entrance. In addition, a large number of traffic delay models are only suitable for simple two-phase signal-controlled intersections, so this paper tries to solve this problem and puts forward a traffic delay calculation model for four-phase signal-controlled intersections. The main research contents of this paper are as follows: (1) through the analysis of the vehicle arrival, the obstructed operation, the discrete process and the characteristics of the vehicle in unsaturated and saturated state at the signalized intersections, The traffic delay model of the vehicle in the initial signal phase or the non-initial signal phase, unsaturated state or saturated state at each entrance of the four-phase signal-controlled intersection is derived. (2) on the basis of considering the difference of the traffic flow characteristics of each inlet of the signal-controlled intersection, the actual traffic data collected are used to demonstrate the calculation process. The maneuverability of the traffic delay calculation model proposed in this paper is verified. (3) two kinds of four-phase signal control intersections which are commonly used in road traffic system are analyzed. The model results of typical four-phase signal-controlled intersections and single-port four-phase signal-controlled intersections are compared with the calculated results of HCM2010 method, which further verifies the practicability and accuracy of the proposed model.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491
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