Method for preventing an undesired or uncontrolled rolling or driving of a vehicle at standstill, in which a) at least one electronic control apparatus is able to actuate a braking apparatus or to increase a braking effect already effected by a braking apparatus, and in which b) by means of at least one environment detecting sensor , detecting at least a part of the environment of the vehicle , which is installed at the vehicle , b1) on the basis of a temporally constant determined position of at least one detected external object in relation to the at least one environment detecting sensor a standstill of the motor vehicle in relation to the at least one external object can be recognized, and b2) on the basis of a temporal change in the determined position of the at least one detected external object in relation to the at least one environmental detecting sensor a relative movement of the vehicle in relation to the at least one external object can be recognized, wherein c) in the case that, starting from a standstill of the vehicle recognized by the at least one environment detecting sensor by means of the at least one environment detecting sensor an undesired or uncontrolled relative movement of the vehicle in relation to the at least one external object is recognized, the electronic control apparatus is prompted to actuate the braking apparatus automatically order to increase a braking effect already effected by a braking apparatus, characterised in that d) an undesired or uncontrolled relative movement of the vehicle in relation to the at least one external object is recognized, in the case that a verification has revealed that there is no valid control signal for a driving or rolling of the vehicle . a) at least one electronic control apparatus is able to actuate a braking apparatus or to increase a braking effect already effected by a braking apparatus, and in which b) by means of at least one environment detecting sensor , detecting at least a part of the environment of the vehicle , which is installed at the vehicle , b1) on the basis of a temporally constant determined position of at least one detected external object in relation to the at least one environment detecting sensor a standstill of the motor vehicle in relation to the at least one external object can be recognized, and b2) on the basis of a temporal change in the determined position of the at least one detected external object in relation to the at least one environmental detecting sensor a relative movement of the vehicle in relation to the at least one external object can be recognized, wherein b1) on the basis of a temporally constant determined position of at least one detected external object in relation to the at least one environment detecting sensor a standstill of the motor vehicle in relation to the at least one external object can be recognized, and b2) on the basis of a temporal change in the determined position of the at least one detected external object in relation to the at least one environmental detecting sensor a relative movement of the vehicle in relation to the at least one external object can be recognized, wherein c) in the case that, starting from a standstill of the vehicle recognized by the at least one environment detecting sensor by means of the at least one environment detecting sensor an undesired or uncontrolled relative movement of the vehicle in relation to the at least one external object is recognized, the electronic control apparatus is prompted to actuate the braking apparatus automatically order to increase a braking effect already effected by a braking apparatus, characterised in that d) an undesired or uncontrolled relative movement of the vehicle in relation to the at least one external object is recognized, in the case that a verification has revealed that there is no valid control signal for a driving or rolling of the vehicle . <EOS>