Home › CDL Practice Tests › Air Brakes Questions › Question 63
Why must the driver never silence or disable a low-pressure buzzer that keeps sounding at low pressure?
- A.The buzzer uses too much battery power
- B.The buzzer can damage the gauges
- C.Silencing it raises tank pressure automatically
- D.The buzzer is reporting a real loss of braking reserve; disabling it hides an emergency instead of fixing it
Correct answer
D. The buzzer is reporting a real loss of braking reserve; disabling it hides an emergency instead of fixing it
Why
The noise is deliberately annoying so it cannot be ignored while air disappears. The only correct fix is to stop, find why pressure is low, and restore the system.
Manual topic: Air Brakes - Safety Valve and Low Pressure Warning · From the Air Brakes practice bank (AB-063).