Practice question

A driver skills-tests in a vehicle with air-over-hydraulic brakes. What federal restriction issue can result?

  1. A full-air-brake restriction for CMVs with brakes operating fully on the air-brake principle
  2. No possible brake restriction
  3. A school bus endorsement
  4. A motorcycle permit

Answer: A — A full-air-brake restriction for CMVs with brakes operating fully on the air-brake principle

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