Practice question

What should a CDL driver know about controlled substances and CMV operation?

  1. Illegal drug use and misuse of impairing substances are prohibited and can disqualify the driver
  2. Stimulants always make driving safe
  3. Prescription drugs never affect CDL driving
  4. Drug rules apply only to Hazmat drivers

Answer: A — Illegal drug use and misuse of impairing substances are prohibited and can disqualify the driver

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