Question 4410
While driving, at what times of day is drowsiness especially likely to set in?
- The late morning hours.
- The pre-dawn hours and the early afternoon.
- The late afternoon and the early morning hours.
Show answer and explanation
Correct answer: The pre-dawn hours and the early afternoon.
Drowsiness follows a biological rhythm of about 24 hours, with two periods when it sets in more easily. One is the pre-dawn hours, especially from 3 to 5 in the morning. The other is the early afternoon, after lunch, especially from 2 to 4.