Volume 40 Issue 4
Aug.  2022
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Article Navigation >  Journal of Transport Information and Safety  > 2022  >  40(4): 92-100
HAO Wei, LIANG Cong, ZHANG Zhaolei, LYU Nengchao, YI Kefu. A Cooperative Lane Changing Strategy to Give Way to Emergency Vehicles with the Cooperative Vehicle Infrastructure System[J]. Journal of Transport Information and Safety, 2022, 40(4): 92-100. doi: 10.3963/j.jssn.1674-4861.2022.04.010
Citation: HAO Wei, LIANG Cong, ZHANG Zhaolei, LYU Nengchao, YI Kefu. A Cooperative Lane Changing Strategy to Give Way to Emergency Vehicles with the Cooperative Vehicle Infrastructure System[J]. Journal of Transport Information and Safety, 2022, 40(4): 92-100. doi: 10.3963/j.jssn.1674-4861.2022.04.010
shu

A Cooperative Lane Changing Strategy to Give Way to Emergency Vehicles with the Cooperative Vehicle Infrastructure System

doi: 10.3963/j.jssn.1674-4861.2022.04.010
  • 1.

    School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China

  • 2.

    Intelligent Transportation Systems Research Center, Wuhan University of Technology, Wuhan 430063, China

  • 3.

    School of Automotive and Mechanical Engineering, Changsha University of Science & Technology, Changsha 410114, China

  • Received Date: 2022-05-22
    Available Online: 2022-09-17
    Abstract
  • A cooperative lane-changing strategy is proposed to reduce the time loss when emergency vehicles approaching to accident scenes, and reduce the impacts of emergency vehicle priority on other vehicles with the cooperative vehicle infrastructure system (CVIS). By adjusting the position of the downstream vehicles (DV), the emergency vehicles can efficiently pass the road sections. The DV and vehicles in the adjacent target lane are taken as control objects. A space-gap set for lane-changing of DV is determined according to the spacing and communication range of vehicles in adjacent lanes. Further, aiming to minimize the overall recovery time of traffic flow, the lane-changing trajectory of DV and the speed change of cooperative vehicles in the adjacent lanes are determined to guide vehicles to complete cooperative merging. It can not only guarantee the safety of the lane-changing behaviors, but also reduce the transmission of speed fluctuations caused by the lane-changing behaviors. For upstream vehicles (UV), the rule of first-in-first-out (FIFO) is used to reduce the time for recover from the speed fluctuations caused by lane-changing behaviors of DV. Considering the impacts of lane-changing on the traffic flow, a control method to reduce the transmission of speed fluctuations is proposed based on a classic lane changing strategy. The results of a case study show that the shortest lane-changing time is 6 s when using the proposed cooperative lane-changing strategy, and the corresponding distance of sending emergency signal is 78.66 m. Meanwhile, the results show that the time required to restore stability of speed is 29 s, which is 34% shorter than that without the cooperative lane-changing strategy.

     

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