Practice question

What is the definition and hazard of 'driver fatigue' for commercial operators?

  1. Muscle strength built from steering heavy trucks
  2. Physical or mental exhaustion that reduces alertness, slows reaction times, and increases crash risks
  3. The wear on vehicle suspension over time
  4. A type of engine breakdown caused by over-revving

Answer: B — Physical or mental exhaustion that reduces alertness, slows reaction times, and increases crash risks

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