function is favorably deactivated when it is not detected by means of a seat occupancy sensor at the driver 39 s seat that the driver 39 s seat is taken the standstill manager executes the control of the brake system i e performing the assist functions according to the invention in a favorable embodiment of the invention the standstill manager is designed as a state machine the vehicle states which are identified by the standstill manager are illustrated in fig1 and comprise the states of creeping starting holding riding and parking securing besides a state u2018 switched off u2019 is provided in which the standstill manager is disabled the standstill manager is activated when the vehicle speed v falls under a predefined threshold value e g 4 km h the standstill manager is deactivated for values of the vehicle speed v above the predetermined threshold value i e it adopts the state u2018 switched off u2019 deactivation favorably also takes place when none of the vehicle 39 s assist functions are activated besides deactivation favorably also takes place when a defect is detected for example in the brake system or in vehicle sensors used by the standstill manager the detection of the other states appears from the conditions initiating a state transition of the standstill manager which is also referred to as transition the possible transitions are depicted in fig2 starting from the state u2018 stop u2019 there are two possible transitions one transition into the state u2018 hold u2019 occurs when standstill of the vehicle is identified due to the usually limited resolution ability of.