CDL · Combination vehicles

The trailer you are pulling begins to skid. What is the correct action?

Correct answer: Let up on the brakes so the wheels can roll.

Answer options

  1. ALet up on the brakes so the wheels can roll Correct
  2. BApply the trailer hand brake so the trailer pulls straight
  3. CPress the brake pedal harder to stop the slide

Why

A trailer skid usually begins when the trailer wheels lock, so letting off the brakes allows them to roll, grip the road again and fall back in line behind the tractor. Pulling the trailer hand brake will not straighten the rig; it only makes the slide worse.

About this question

Topic: Combination vehicles   License: CDL

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Where it applies: Asked in every state.

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