Practice question

Before uncoupling a trailer from a rigid vehicle, the driver must ensure that:

  1. The trailer handbrake is released so the trailer can roll free
  2. The trailer is on level, firm ground with the trailer park brake applied
  3. The motor vehicle's engine is running during uncoupling
  4. The trailer brake connections are disconnected first

Answer: B — The trailer is on level, firm ground with the trailer park brake applied

The correct answer is shown above. Try the full quiz for additional practice.

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