An arrangement to awaken a sleeping driver or operator of a vehicle, a vessel, an aeroplane or any other system that is controlled by a person, includes a detection part that is arranged to measure movements of a control element that belongs to the vehicle with which control element the driver has hand contact, a calculation circuit arranged to compare movements of the control element over time, and an alarm part arranged to produce vibrations in the control element. The calculation circuit is arranged to activate the alarm part when no movement of the control element has occurred during a pre-determined period, which pre-determined period indicates that the driver has fallen asleep, and in that all the parts are mounted on or are integrated with the control element.