an apparatus and a system include an actuator assembly configured for controlling a movement of a manual mechanical linkage shaft in a manual brake system for a vehicle wheel . an electric motor drives the actuator assembly wherein a manually applied force to the manual mechanical linkage shaft is modulated or pulsed . a lock and release assembly is configured for engaging and disengaging the actuator assembly to and from the manual mechanical linkage shaft . means actuates the lock and release assembly to engage the actuator assembly to the manual mechanical linkage shaft , and disengage the actuator assembly from the manual mechanical linkage shaft . an electronic controller controls the electric motor during a braking of the vehicle wheel to mitigate skidding of the vehicle wheel during the braking