US Patent 9815425 Autonomous vehicle restraint deployment

A vehicle system includes a base, a driver seat rotatably disposed on the base, a sensor, and a processor. The sensor is programmed to measure an angular displacement of the driver seat relative to the base and output a displacement signal representing the angular displacement. The processor is programmed to receive the displacement signal and select at least one of a plurality of passive safety devices based at least in part on the angular displacement represented by the displacement signal and only deploy the selected passive safety devices during a collision.