Abstract: A deployable passenger restraint system for an automotive vehicle has an occupant seat mounted on a seat track for adjustable movement in a longitudinal direction, the seat track having a movable rail in slidable relationship with the stationary rail mounted to the vehicle floor. The system includes a deployable restraint mounted in a forward location of the vehicle, a deployment mechanism for deploying the restraint, a deployment restraint processor for receiving and processing restraint deployment signals and for controlling the deployment mechanism, and a seat position sensor. The seat position sensor has a stepped flange adapted to be mounted along a predetermined length of a flange side of the movable rail, and a magnetic sensor adapted to be mounted to the stationary rail on a sensor side adjacent the flange side for sensing presence of the flange and relaying a single representative of seat position to the deployment processor.