Abstract: A method for controlling the operation of an active suspension system for a motor vehicle passenger seat, where the active suspension system comprises an actuator that is constructed and arranged to place force on the seat in a first degree of freedom and a control system that is responsive to a sensor system that detects motor vehicle accelerations in at least the first degree of freedom, where the sensor system comprises an accident detection system that detects motor vehicle accident conditions, where the control system provides control signals that cause the actuator to exert a force on the seat in the first degree of freedom, wherein in normal active suspension operation mode the actuator is controlled to output forces that reduce acceleration of the seat so as to counteract motions of the seat in the first degree of freedom.