随机度反馈策略对路网中交通流的影响

发布时间：2018-03-27 08:34

本文选题：信息反馈策略　切入点：双通道系统　出处：《东北师大学报(自然科学版)》2017年04期

【摘要】：考虑到现实路况的复杂性,建立备选路径路宽不同、车道数存在差异的路网模型,并提出了新的反馈策略——随机度反馈策略.通过分析随机度、平均速度、车辆数以及交通流量反馈策略对该路网模型交通流特性参数的影响,探究随机度反馈策略的优越性.仿真结果表明:随机度反馈策略下,路网中车辆运行有序,接近出口处道路上车辆排队长度短,车辆速度大.同时,通过分析平均流量随动态车比例变化情况可知,当动态车比例不大于0.6时,平均速度、车辆数及随机度反馈策略有效性相当;当动态车比例大于0.6时,平均速度、车辆数反馈策略下平均流量降低明显,策略失效,而随机度反馈策略下平均流量变化平稳,该策略能有效改善路网道路车辆通行状况.
[Abstract]:Considering the complexity of real road conditions, a road network model with different road width and different lane numbers is established, and a new feedback strategy, random degree feedback strategy, is proposed. The influence of the number of vehicles and the traffic flow feedback strategy on the traffic flow characteristic parameters of the road network model is discussed, and the superiority of the random degree feedback strategy is explored. The simulation results show that under the random degree feedback strategy, the vehicles in the road network run in an orderly manner. On the road near the exit, the queue length is short and the vehicle speed is large. At the same time, by analyzing the variation of the average flow rate with the dynamic vehicle ratio, we can see that when the dynamic vehicle proportion is less than 0.6, the average speed is higher. When the dynamic vehicle ratio is greater than 0.6, the average flow rate and vehicle number feedback strategy decrease obviously, and the strategy fails, while the average flow rate changes smoothly under the random degree feedback strategy. This strategy can effectively improve the traffic condition of road network.
【作者单位】：重庆交通大学交通运输学院山地城市交通系统与安全重点实验室;
【基金】：国家自然科学基金资助项目(61403052)
【分类号】：U491

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