Home › CDL Practice Tests › Air Brakes Questions › Question 188
After driving through deep water, brakes may be wet and weak. How can you dry them?
- A.Drive slowly and apply the brakes lightly for a short distance to generate gentle heat and dry the linings, while checking that the vehicle does not pull
- B.Make several maximum stops from highway speed
- C.Hold the parking brake on for the next mile
- D.Shift to neutral and coast until they dry on their own
Correct answer
A. Drive slowly and apply the brakes lightly for a short distance to generate gentle heat and dry the linings, while checking that the vehicle does not pull
Why
Light application at low speed warms and wipes the friction surfaces without demanding a full stop from wet brakes. Testing the result at low speed also reveals pulling caused by one side drying or working differently from the other.
Manual topic: Air Brakes - Brake Fade and Heat · From the Air Brakes practice bank (AB-188).