Safety of passengers has been a severe issue in all societies of any country in the world. Tousands of people lose their lives daily and many more lose their livelihood because of paralysis caused by accidents. Accidents not only cause physical
injuries but also are responsible for high economic losses. According to various studies
and investigations it is noticed that one of the major causes behind the road accidents
is driver’s drowsiness. Tis drowsiness can be the cause of many reasons. Fatigue or
sleep deprivation are the major reasons. Tus, a countermeasure device is currently
essential in many felds for sleepiness related accident prevention. Many researchers
have been working on different aspects to deal with this drowsiness issue through various aspects like (1) Subjective Measures, (2) Physiological measures, (3) Vehicle-based
measures, (4) Behavioural measures Tis paper proposes a comparative review on
different methods used to detect drowsiness of drivers. It looks into the advantages
and disadvantages of different methods used for the purpose and creates a detailed
comparative analysis for a better future hybrid model to be taken into consideration.
Tis would further help in enhancing the safety measures that should be taken for
road safety