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基于车辆队列的饱和状态下城市主干道旅行时间估算方法

, PP. 133-140

Keywords: 交通工程,旅行时间估算,车辆队列识别,饱和交通流,城市主干道,Q-Paramics仿真

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Abstract:

当前城市主干道过饱和交通流交通状况恶劣,交通拥堵时常发生,由于受信号灯的周期性阻滞作用,交叉口上游车辆淤积现象严重,传统的连续交通流模型无法用于估算城市主干道旅行时间.有鉴于此,提出了一种适用于中断交通流的基于车辆队列的旅行时间估算方法.基于道路上已有的存在型检测器,运用检测器采集的高精度实时数据,研究了车队识别和匹配方法,通过匹配车队信息,对通过饱和状态下城市主干道的车辆进行了实时旅行时间估算.在此基础上,利用Q-Paramics软件进行了实例模型仿真验证.通过对比算法估算值和仿真模型观测值,验证了算法的合理性和有效性,为评估饱和状态下的城市主干道交通状态奠定了基础.

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