Practice question
An applicant tests in a passenger bus equipped with air-over-hydraulic brakes. Which restriction issue should they understand?
- A Z restriction can prevent operation of CMVs with full air-brake systems
- The test automatically gives full air-brake authority
- The Passenger endorsement removes all brake restrictions
- Air-over-hydraulic brakes are treated as no brakes for CDL purposes
Answer: A — A Z restriction can prevent operation of CMVs with full air-brake systems
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