In road safety, what is the only truly effective short-term countermeasure for severe driver drowsiness?

Answer and explanation

Correct answer: A. Stopping at a safe rest area and having a caffeinated drink, and taking a 15-20 minute nap

  1. Step 1: Fatigue countermeasures. Step 2. Gimmicks like open windows or loud music fail to prevent microsleeps; the proven countermeasure is a short caffeinated power nap.

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