四相位信號控制交叉口交通延誤模型研究
[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.
【學(xué)位授予單位】:湖南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:U491
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