Abstract: A device for protecting a self-propelled rail vehicle against swaying, which device includes a measuring member for ascertaining the torsional vibrations of the wheels of a driving wheel set with regard to each other. This measuring member is arranged between the respective wheel set bearing and the carriage frame, preferably in the longitudinal direction of the vehicle. The measuring member is operable to ascertain the torsional vibration reactions between the respective wheel set bearing and the carriage frame and to bring about a corresponding control of the vehicle drive motor for a corresponding change in the pulling force of the wheel set.