Home › CDL Practice Tests › Air Brakes Questions › Question 135
How should you check the parking brake during an inspection?
- A.Set the parking brake and gently try to move the vehicle to confirm it holds
- B.Set it only after the vehicle is already rolling downhill
- C.Look at the control knob and assume it works if it moves
- D.Release air from the tanks while parked on a steep grade without chocks as a test
Correct answer
A. Set the parking brake and gently try to move the vehicle to confirm it holds
Why
Holding power is the whole job of a parking brake, so a gentle pull against it proves the spring brakes are doing that job. A vehicle that creeps with the brake set needs repair before it is parked or driven normally.
Manual topic: Air Brakes - Brake Inspection · From the Air Brakes practice bank (AB-135).