摘要
针对传统的交通阻塞疏通方法存在疏通时间较长、疏散通道利用率较低等问题,提出了基于蚁群算法的公路施工期间不同时间段交通阻塞疏通方法。在公路施工期间不同时间段交通阻塞疏通过程中,以车辆应急交通疏散时间为参照点,将该参照点作为被疏散车辆选择疏散路径的基础,通过以参照点为基础的价值函数确定不同备选路径价值,引入前景值模型计算不同备选路径的前景值。通过备选路径的前景值,自适应地调整路径选择策略以及信息素来更新策略,构建公路施工期间不同时间段交通堵塞疏散路径优化的自适应蚁群算法数学模型,得到最优疏散路径,完成公路施工期间不同时间段交通阻塞疏通。实验结果表明,所提方法有效提高疏散通道利用率,降低疏散时间。
Traditionally, the time to relieve traffic jam is too long and utilization rate of evacuation channel is low. In this paper, we presented a method to relieve traffic jamming at different time periods during highway construction based on ant colony algorithm. In this process, we took the emergency traffic evacuation time of vehicle as the reference point, and then we used this reference point as the basis for selecting the evacuation route. Moreover, we determined the values of different alternative paths by the value function based on the reference point. In addition, we introduced a prospect value model to calculate prospect values of different alternative paths. Based on the prospect value of alternative path, we adaptively adjusted the path selection strategy and the pheromone update strategy, so as to build the adaptive ant colony algorithm mathematical model for traffic congestion evacuation path optimization at different time periods during highway construction. Finally, we obtained the optimal evacuation path. Thus, we could relieve traffic jamming at different time periods during highway construction. Simulation results show that the proposed method can effectively improve the utilization rate of evacuation passageway and reduce the evacuation time.
引文
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