Zhendong Liu, Hongfei Jia, Ruiyi Wu, Jingjing Tian and Guanfeng Wang. Lane-Change Optimization Strategy for Giving Way to Emergency Vehicles Based on IOV Technology. Dynamic Systems and Applications 29 (2020) No. 9, 2750 – 2764

https://doi.org/10.46719/dsa20202993

ABSTRACT.
Developing an effective strategy to facilitate emergency vehicle arrive at rescue sites timely has been a hot topic of critical significance to the emergency rescue. Despite emergency vehicles are permitted by law to have a higher priority right of road, the limitation of information acquisition and cannot give up the lane immediately present significant challenges for preceding vehicles lane-changing, which is of the essence for giving way to emergency vehicles. At the same time, the sudden lane-changing of vehicles also aggravate the degree of road congestion and have a great impact on the traffic status. In this study, combining the results obtained from dynamic lane-changing modelling and traffic microsimulation, a lane-changing strategy for giving way to emergency vehicle based on the internet of vehicle (IoV) technology was developed. First, the lane-changing behaviour of preceding vehicles of emergency vehicles is modelled by vehicle motion trajectory and safe distances. The model assume that emergency vehicles can travel as fast as possible at a constant velocity. Next, two lane-changing schemes for preceding vehicles of emergency vehicles were proposed to illustrate these related features pertaining to this new model. Subsequently, a traffic microsimulation was conducted using the position and velocity information of preceding vehicles before emergency vehicles, which can be obtained through IoV regarding the traffic velocities and accelerations along rescue routes during a giving way process. Linear programming was used as a simulation technique to calculate the velocity and acceleration. The simulation results showed that it was feasible to select the lane-change scheme based on different initial relative locations of the ordinary and emergency vehicles on urban roads. The optimal lane-change strategy ensured the efficiency and smoothness of the giving way process, as well as faster and safer arrival of the emergency vehicles at destinations.

Keywords: Lane-change, Emergency Vehicle, internet of vehicle