Practice question

For a Maryland Class A combination the trailer hand valve?

  1. Drive with trailer air pressure faults
  2. Assume ABS permits tailgating or poor brake checks
  3. The trailer hand valve should be used only to test trailer brakes, not for normal driving.
  4. Use the trailer hand valve for normal stops

Answer: C — The trailer hand valve should be used only to test trailer brakes, not for normal driving.

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