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Incorrect!

What should you do when an air-pressure warning device activates?

Continue to drive the vehicle
You selected this answer
Drain the air tanks
Stop and have the fault put right
Correct answer
Pump the brake pedal repeatedly

DVSA theory test explanation

Air-brake systems are fitted with a warning device that operates if the air pressure in the tanks drops below a safe level. There may be a warning buzzer and/or pressure gauges. You must be aware of the function of all gauges on your vehicle, and check them as you drive.

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