2026 Vermont Combination CDL Practice Test 2

After you supply air to the trailer, make sure the airlines are not crossed and the trailer brakes are working. This is done by:

Turning on the parking brakes from the cab. Applying and releasing the trailer brakes and listening for brake sounds. Lifting the brake pedal.

Applying and releasing the trailer brakes and listening for brake sounds.

Access more questions from this quiz

Continue to 2026 Vermont Combination CDL Practice Test 2 for more practice questions and the full quiz experience.