Abstract: A safety system for use in a vehicle having a fuel cell system with a fuel supply means and an electrical energy source, wherein a plurality of sensors are associated with the fuel cell system and deliver safety relevant signals, these sensors are connected to a safety control and the fuel cell system has at least one device for switching off the fuel supply device and also at least one device which can be actuated by the safety control for separating at least one component of the fuel cell system from the electrical energy source, is characterized in that the safety system stands in association with an airbag system having at least one airbag with at least one gas generator associated with the airbag for the inflation of the airbag, preferably also with at least one safety belt with a belt tensioner, with an airbag control controlling the gas generator and optionally also the belt tensioner and also a plurality of sensors which are connected via a circuit to the airbag control and deliver safety relevant sig