Home › CDL Practice Tests › Air Brakes Questions › Question 113
In a total service brake air loss at speed, what is the driver's best emergency stopping strategy?
- A.Use the remaining air wisely with one steady application if possible, steer to a safe place, and let the spring brakes bring the vehicle to a final stop as pressure falls
- B.Pump the pedal rapidly until the tanks are empty
- C.Turn the engine off immediately at speed
- D.Jump from the vehicle before it stops
Correct answer
A. Use the remaining air wisely with one steady application if possible, steer to a safe place, and let the spring brakes bring the vehicle to a final stop as pressure falls
Why
Air in a failing system is a non-renewable resource, so wasting it on pumping shortens the controlled portion of the stop. Planning the stop around the automatic spring application keeps the driver in charge longest.
Manual topic: Air Brakes - Spring Brakes and Parking Brakes · From the Air Brakes practice bank (AB-113).