Drivers’ Collision Avoidance Limit by Braking and Steering

Abstract:

The limit of drivers’ capacity of collision avoidance by braking and steering were analyzed in this paper based on the charateristics of drivers’ collision avoidance manervers and vehicle dynamics. The critical values of timetocollision(TTC) of these two different collision avoidance manervers were obtained and compared. The influences of road coefficient and overlap rate were also analyzed. The results quantitatively show that under certain conditions such as high relative speed, low friction coefficient, and small lateral overlap, the collision avoidance by steering is easier than by braking.