During which time slots is the onset of sleepiness or drowsiness most frequent while driving?

Question

DentroTest · Accepted Answer

The correct answer is during the early morning hours (dawn) and early afternoon. This is due to human biological (circadian) rhythms. Statistically, the risk of sleep-related accidents is highest during two critical periods: between 3:00 AM and 5:00 AM (when the body has its lowest alertness level) and between 2:00 PM and 4:00 PM (after lunch). It is vital to avoid driving during these hours or to take extreme precautions by making frequent stops, as monotony and digestion aggravate drowsiness.

During which time slots is the onset of sleepiness or drowsiness most frequent while driving?

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