Mark one answer
The exhaust brake won't work
Brake fade
An increase in pressure on the air gauge
A buzzer or light
Explanation: If a warning buzzer or light alerts you to a loss of air pressure, you should stop on the side of the road immediately. You should have enough air in reserve to allow you to do this safely. Don't start or continue your journey until the fault has been repaired.
Category: Braking Systems
References: The Official DVSA Guide to Driving Buses and Coaches: Section 2, The Official DVSA Guide to Driving Goods Vehicles: Section 2
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