Abstract
Frontal collision pre-crash safety systems have been developed and enhanced previously in order to help reduce fatalities caused by traffic accidents. However, considering the number of injuries and resulting societal costs caused by rear-end collisions, a rear pre-crash safety system for rear-end collisions has been recently developed.
The hazard of a rear-end collision is recognized by a rear sensing system consisting of a recently developed short-range radar and a collision detection computer. When the probability of rear-end collision becomes high, the system activates a warning to the trailing vehicle, and if the collision is judged unavoidable, occupant protection devices are activated. If the trailing driver notices this warning and applies the brake, the rear-end impact speed can be reduced.
When the collision is unavoidable, whiplash injury can be reduced by moving the head
restraint to the occupant´s head.
By developing this rear pre-crash safety system for rear-end collisions, overall collision damage reduction performance has been enhanced.
Keywords - pre-crash, rear-end, radar, safety, head restraint