US Patent 7556291 Vehicle restraint system

A vehicle safety system comprises a gate movably coupled to the vehicle, and a collapsible barrier coupled to the gate and to the vehicle. The gate is movable between a stowed position and a deployed position. In the stowed position, the gate collapses the collapsible barrier into a position adjacent to the vehicle such that the occupant may egress through an exit of the vehicle substantially unimpeded by the collapsible barrier or gate. In the deployed position, the gate and the collapsible barrier extend at least partially across the exit to impede egress of the occupant through the exit.