Passenger restraint device of motor vehicle

A passenger restraint device of a motor vehicle comprises a plurality of predicting devices (10,11,12) each being able to predict or detect a collision of the vehicle with an obstacle in front of the vehicle. A sensitivity adjusting device (42) is able to adjust a sensitivity of at least one of the predicting devices. Reversible passenger restraining devices (31,32) are able to reversibly restrain a passenger in the vehicle. Non-reversible passenger restraining devices (33,34) are able to non-reversibly restrain the passenger in the vehicle. A control unit (40), based on a signal from the one of the predicting devices that has been subjected to the sensitivity adjustment by the sensitivity adjusting device (42), controls operation of the reversible and non-reversible passenger restraining devices (31,32,33,34).