AIRBAG APPARATUS

An airbag apparatus includes an airbag configured to be deployed forward of a front of a vehicle body of a vehicle, a collision determiner configured to establish a pre-crash determination when a collision probability is a predetermined threshold or higher, an airbag deployment controller configured to, in response to the pre-crash determination, give to an inflator a command to supply deployment gas to the airbag and deploy the airbag, a vent controller configured to open and close a vent passage configured to discharge the deployment gas from the airbag, and an energy absorption state detector configured to detect a state of energy absorption by the airbag. The vent controller is configured to open the vent passage at an early stage of collision with a collision object, and subsequently, reduce an opening degree of the vent passage when the energy absorption state detector detects a completion of energy absorption.