Revision question · Braking systems

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

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

Continue to drive the vehicle

Drain the air tanks

Stop and have the fault put right

Pump the brake pedal repeatedly

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Stop and have the fault put rightThis was the right answer

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.

Reviewed reading for this question

Do not move with unsafe brake-air pressureReviewed guidance summary · A warning while stationary means keep the parking brake applied; one during travel requires a safe stop and fault repair. The ability to release the park brake does not prove sufficient service-brake pressure.

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