Revision question · Braking systems

When should an endurance brake (retarder) be used?

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

On motorways only

When braking quickly

When you stop or park

On long downhill slopes

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On long downhill slopesThis was the right answer

An endurance brake can help to control your speed on long downhill slopes without using the service brake. Reducing the use of the service brake helps to prevent the brakes from overheating and reduces the risk of brake fade.

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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