This thesis deals with the study and simulation of methods to identify levels of drowsiness in drivers of motor vehicles for the period of prolonged driving. Fatigue and distraction are the cause of a large number of road accidents in the world. The causes of high fatigue during driving are mainly: lack of rest, excessive driving times, travel at night and weariness in general. The vast majority of drivers do not recognize or underestimate the limitations of the ability to react due to fatigue. In fact, generally you continue the journey despite the arrival of clear symptoms of tiredness. Development of driving aids is of current interest in order to reduce critical situation.