Abstract
A rear seat inflatable restraint system was developed which consists of a crushable honeycomb knee bar to limit femur loads and to help control the head and upper torso trajectory of the unbelted occupant. At speed below that at which the airbag deploys, protection is provided by energy absorbing padding on a head bar as well as on the knee bar. In terms of present injury criteria, the system was effective for crash speeds up to 45 mph during frontal and oblique collisions.