Practice question

Mirror adjustment can only be checked properly if:

  1. The trailer is straight.
  2. There is no trailer attached to the tractor.
  3. The vehicle is on a slight incline.
  4. The vehicle is on a slight decline.

Answer: A — The trailer is straight.

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

Practice more: New Jersey CDL Double Test 2 →