Practice question

To confirm that a trailer has ABS, you can:

  1. Look under the trailer for wheel speed sensors coming from the back of the brakes.
  2. Look under the hood for the ABS sticker.
  3. Look at the tires.
  4. Remove a tire and look for the ABS sensor on the axle.

Answer: A — Look under the trailer for wheel speed sensors coming from the back of the brakes.

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

Practice more: Colorado CDL Air Brakes Test 2 →