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针对高速公路交通拥挤、整体服务水平降低、车辆延误增加等问题,提出了一种基于元胞传输模型的高速公路瓶颈区域可变限速控制方法.将可变限速控制方法同元胞传输模型进行融合,使其对限速条件下高速公路交通流变化进行描述,并以提高通行效率和缩短车辆平均延误为控制目标,建立了高速公路瓶颈区域可变限速最优控制模型.实验证明:在高流量条件下,基于元胞传输模型的高速公路可变限速控制方法具有良好的控制效果,能够有效地提升高速公路整体服务水平.
Aiming at the problems of expressway traffic congestion, the overall service level is reduced and the vehicle delay is increased, a variable speed control method for expressway bottleneck region based on cellular transmission model is proposed. The variable speed control method is similar to the cellular transmission model The paper makes a description of the change of expressway traffic flow under the condition of speed limit, and establishes a variable speed limit optimal control model of the bottleneck region of expressway with the aim of improving traffic efficiency and shortening the average delay of vehicles.Experimental results show that: Under high flow conditions, the variable speed control method based on cellular transmission model has a good control effect, which can effectively improve the overall service level of the expressway.