Intersection Vehicle Group Safety Model Using Potential Field Theory

Abstract:

Group safety is an important part of intelligent connected vehicle research in the vehicle-infrastructure cooperation environment. In the intersection area with strong structure and weak rule characteristics， the group safety characterization of vehicle driving can improve the safety of the intersection area. Firstly， the vehicle potential field model is constructed based on potential field theory， and the safety generalized characterization of individual vehicle driving behaviors in the intersection area is represented by boundary potential energy， vehicle potential energy， and speed potential energy； then the parameters and boundary range of group vehicle safety characteristics in the intersection area are constructed based on contour distribution characteristics of the potential energy field density； finally， through the simulation of natural driving data， the results indicate that the threshold value of the safety potential energy of the vehicle group in the straight forward， left turn， right turn scenarios is 2500， and the periodic change law of group safety potential energy is consistent with the phase change law of traffic signals， indicating that the model can accurately represent the behavior and safety state of the intersection vehicles， thus verifying the correctness and effectiveness of the intersection vehicle group safety model.

Key words:intelligent vehicle;group safety;natural driving study;potential field theory