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'Brake fade' is a loss of effectiveness of the brakes when they overheat. When would 'brake fade' be most likely to happen?

Why this is the answer

Continuous use of the brakes will cause them to overheat, and in extreme cases they'll become ineffective. When you're going downhill, the momentum of your vehicle will cause you to gather speed very quickly. Use the endurance brake (retarder) and stay in a low gear to reduce the need to use the brakes.

Why the other answers don't fit

A
On a long journey — Distance alone does not heat the brakes. Repeated or continuous use does.
C
On the approach to hazards — A hazard brings one firm application, which the brakes shed heat from afterwards.
D
On a long uphill gradient — Going uphill the engine and gravity slow you, so the brakes are barely used.

Where this comes from

  • Driving Buses and Coaches — section 3, section 7
  • Driving Goods Vehicles — section 3

Rule numbers link to The Highway Code on gov.uk.

Where this question comes from

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Asked in: Lorry & Bus (LGV/PCV)

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