Practice question

For combination-vehicle safety, why should you avoid making sudden steering inputs in a combination vehicle?

  1. The trailer brakes can lock
  2. The trailer can swing wide and roll over or jackknife
  3. The mirrors will vibrate
  4. The kingpin can disengage

Answer: B — The trailer can swing wide and roll over or jackknife

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

Practice more: NC CDL Combination Vehicles Practice Questions - North Carolina CDL Combination Vehicles Test Exam →