Practice question

After uncoupling, the air lines and electrical cord should be:

  1. Secured on the dummy couplers on the back of the tractor or in storage hangers
  2. Left dragging on the ground for quick access later
  3. Cut off and replaced
  4. Stowed inside the trailer

Answer: A — Secured on the dummy couplers on the back of the tractor or in storage hangers

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

Practice more: Washington CDL Combination Practice Questions - Washington CDL Combination Vehicles Test Exam →