Revision question · Braking systems

What causes 'brake fade'?

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

Continuous use of the brakes

Repeated pumping of the brakes

Loss of air pressure in the system

Badly worn brake pads

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Continuous use of the brakesThis was the right answer

Continuous use of the brakes on a long downhill gradient can cause them to overheat and become ineffective. This is called brake fade. You should use a low gear to enable the engine's braking effect to help control your speed. Also use the vehicle's retarder, if fitted. As well as reducing the likelihood of brake fade, this helps to keep air pressure in the tanks.

Reviewed reading for this question

Save the service brakes on a long descentReviewed guidance summary · These test brake fade’s heat cause, downhill risk, suitable gearing, retarder purpose and reduced friction-lining wear; air loss and worn linings are different faults.

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