Practice question

Under 49 CFR § 392.4 and § 392.5, a CMV driver is prohibited from operating while:

  1. Wearing sunglasses
  2. Possessing, using, or being under the influence of any Schedule I drug, amphetamine, narcotic, or alcohol (or having alcohol within 4 hours of driving)
  3. Drinking water
  4. Listening to the radio

Answer: B — Possessing, using, or being under the influence of any Schedule I drug, amphetamine, narcotic, or alcohol (or having alcohol within 4 hours of driving)

The correct answer is shown above. Try the full quiz for additional practice.

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