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Each year more than 1.2 million people die in car related accidents around the world. Dying in a car accident is the most common cause of death among people aged between 15 – 29 years. According to statistics, low- and middle-income countries are responsible for roughly 90% of road traffic deaths. European roads remain the safest in the world with road traffic fatality rate of 9.3 per 100 000 population. The world average is 17.4 per 100 000 population. The worst results may be observed in the African Region. The road traffic fatality rate per 100 000 is almost three times higher than European and equals 26.6. Tiredness may be described as a state of fatigue caused by not enough sleep, physical activity, sickness or many other factors. Drowsiness is described as an inclination to fall asleep. Three stages that describe sleep are: being awake, non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. Furthermore, NREM sleep is divided into another three-part: stage 1 which is a transition from awake to asleep, stage 2 which is light sleep and stage 3 which is deep sleep. Drowsiness stage that is most dangerous for road traffic users is stage 1. Sleepiness scale is also measured using the Karolinska sleepiness scale (KSS). Drivers showing signs that the table would describe with number 6 or higher are potentially dangerous. The article presents the evolution of safety systems, with particular emphasis on the prediction of the driver falling asleep. The article also proposes a proprietary system of sleep prediction.