Revision question · Braking systems

Your vehicle is fitted with air-assisted hydraulic brakes. What would warn you that there isn't enough air in the system?

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

An increase in pressure on the air gauge

A buzzer or light

The exhaust brake won't work

Brake fade

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A buzzer or lightThis was the right answer

A buzzer or warning light can indicate dangerously low brake-air pressure. Stop safely without delay, report the fault and have it repaired before continuing. Do not rely on an assumed amount of braking reserve or accelerate to conceal the warning.

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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