Patent attributes
A collision avoidance system is provided with: a rear detection device arranged in a host vehicle and capable of detecting an object directly behind the host vehicle, an object to the rear-right of the host vehicle, and an object to the rear-left of the host vehicle in a non-contact manner. A computation processing unit outputs, on the basis of a detection result from the rear detection device, the presence/absence of the possibility of a collision between the host vehicle and: a first following vehicle approaching the host vehicle from directly behind, a second following vehicle approaching the host vehicle from the rear-right, and a third following vehicle approaching the host vehicle from the rear-left. A warning device generates warnings when there is the possibility of a collision with the first, second or third following vehicles.