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小型突发事件场景下的应急车辆优先通行策略研究

黄敏 伍召举 李烨焘 王灵丽

黄敏, 伍召举, 李烨焘, 王灵丽. 小型突发事件场景下的应急车辆优先通行策略研究[J]. 交通信息与安全, 2021, 39(6): 19-26,53. doi: 10.3963/j.jssn.1674-4861.2021.06.003
引用本文: 黄敏, 伍召举, 李烨焘, 王灵丽. 小型突发事件场景下的应急车辆优先通行策略研究[J]. 交通信息与安全, 2021, 39(6): 19-26,53. doi: 10.3963/j.jssn.1674-4861.2021.06.003
HUANG Min, WU Zhaoju, LI Yetao, WANG Lingli. A Study of Prioritized Routing Strategy of Emergency Vehicles over Small-scale Emergency Scenes[J]. Journal of Transport Information and Safety, 2021, 39(6): 19-26,53. doi: 10.3963/j.jssn.1674-4861.2021.06.003
Citation: HUANG Min, WU Zhaoju, LI Yetao, WANG Lingli. A Study of Prioritized Routing Strategy of Emergency Vehicles over Small-scale Emergency Scenes[J]. Journal of Transport Information and Safety, 2021, 39(6): 19-26,53. doi: 10.3963/j.jssn.1674-4861.2021.06.003

小型突发事件场景下的应急车辆优先通行策略研究

doi: 10.3963/j.jssn.1674-4861.2021.06.003
基金项目: 

国家重点研发计划项目 2020YFB1600400

详细信息
    通讯作者:

    黄敏(1975—), 博士, 副教授.研究方向: 交通规划与管理.E-mail: huangm7@mail.sysu.edu.cn

  • 中图分类号: U491.1+3

A Study of Prioritized Routing Strategy of Emergency Vehicles over Small-scale Emergency Scenes

  • 摘要: 对于高峰期发生的小型突发事件, 应急车辆优先通行可能对路网造成强负外部性, 同时为保证应急车辆优先通行而采取的信号协调策略可能导致路径选择不可靠。因此, 提出1种基于双层规划模型的应急车辆优先通行策略, 综合考虑应急车辆的时效性以及交通系统的运行效率。路径选择受路径长度等物理条件以及交通状态的影响, 信号控制改变车道通行能力和上下游流量, 进而改变路网状态。以车道组饱和度作为表征路网状态的参数, 并以此联系路径选择与信号控制, 进而构建应急车辆优先通行的双层规划模型。具体地, 上层目标为应急车辆行程时间最短以保证应急车辆出行的时效性, 下层目标为信号控制对交通系统的社会车辆效益最大, 采用改进的前N条最短路径多重标号算法求解。算例结果表明: 相较于传统方案, 应急车辆行程时间增加8.7%, 对社会车辆的延误降低261%, 即应急车辆每降低1%的行程时间以交通系统增加30%的延误为代价。该方案能够以较小的应急车辆延误为代价降低高峰期交通系统较大的延误。

     

  • 图  1  交通状态改变示意图

    Figure  1.  Change of traffic state

    图  2  双层规划模型示意图

    Figure  2.  Bi-level programming model

    图  3  信号延长策略示意图

    Figure  3.  Traffic-signal extension strategy

    图  4  信号抢占策略示意图

    Figure  4.  Traffic-signal preemption strategy

    图  5  双层规划求解算法流程图

    Figure  5.  Flow of the algorithm of bilayer programming

    图  6  案例路网

    Figure  6.  Road network

    图  7  案例路网车道组饱和度

    Figure  7.  Saturation of a lane group

    图  8  应急车辆路段行程时间

    Figure  8.  Road segment time of emergency vehicles

    图  9  应急车辆出行路径

    Figure  9.  Path of emergency vehicles

    表  1  信号调整方案表

    Table  1.   Signal control scheme

    节点 到达时刻 调整时长/s 社会车辆节约总时间/s 社会车辆延误总时间/s
    v0 08:10:00 0 0 0
    v4 08:10:54 0 0 0
    v7 08:11:33 18 378 144
    v11 08:12:06 12 120 468
    v15 08:12:33 0 0 0
    v14 08:12:59 20 340 340
    v19 08:14:00 26 338 845
    v20 08:14:12 0 0 0
    v21 08:14:46 0 0 0
    vd 08:15:12 0 0 0
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-18
  • 网络出版日期:  2022-01-12

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