A safety on-board vehicle multi-force restraint self-controlling system improves the security of the air bags for children and light women passengers according requirements of the final rule of Section § 571.208 Standard No. 208; “Occupant crash protection” by employing the accurate weight occupant KEF technology. The system also provides, in case of an accident, different forces applied to the occupant bodies of different weight categories by employing an original occupant's weight, measured at the beginning of a trip by innovative weighing KEF technology, which is eventually modified during the trip according to the current values of the morphological and driving factors. The system provides secure personalization of the occupants' weight by a finger print sensor. From beginning and during the trip, an extracting unit continuously monitors the needed combination of openings that gives an access for the extra gas to move from inflator to the atmosphere by a signal from the crash sensor, and the combination satisfies the code of the accurate original weight of the occupant, modified according to the current morphological and the car trip situation parameters: car crash severity, position of the occupant, seat belt state, and other possible parameters of the current trip situation. The multi-force restraint system provides a self-control and prevents the inflator from rupturing when an excessive internal pressure is produced.