Collision Risk Evaluation Index Based on Deceleration for Collision Avoidance (First Report)

- Proposal of a new index to evaluate collision risk against forward obstacles -

Abstract

This paper proposes deceleration for collision avoidance (DCA) as a new index to evaluate collision risk against forward obstacles. Cases in which the vehicle in front maintains its current acceleration or decelerates abruptly are defined as overt- and potential DCAs, respectively. Numerical simulations are performed to compare the DCA values with time-to-collision and margin-to-collision, which are wellknown indices used to evaluate the potential collision risk in a situation where the possibility of collision with a forward obstacle is high.