KNEE AIR BAG AND CONTROL METHOD OF DEPLOYING THE SAME

A knee air bag reduces an injury to occupant's legs by employing a slim crash pad design. The air bag includes a first cushion that is deployed from an inner side of a crash pad toward an occupant to fill a space below the crash pad and a second cushion that is deployed between the first cushion and the occupant to support occupant's legs while being supported on the first cushion.