Practice question

Under FMCSA driver qualification rules (49 CFR Part 391), a driver must be at least:

  1. 16 years old to drive any commercial vehicle
  2. 21 years old to operate a CMV in interstate commerce
  3. 25 years old without exception
  4. 18 years old for any CMV including interstate

Answer: B — 21 years old to operate a CMV in interstate commerce

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