Practice question

What is brake fade (Bremsfading) and how does a bus driver prevent it during extended mountain descents?

Freezing of brake calipers in winter; prevented by installing heated wheel hubs
Loss of steering control during differential lock; prevented by resetting the ABS sensors
Vapor lock in air brake lines; prevented by bleeding the air reservoirs while driving
Severe loss of braking friction due to extreme thermal overheating of brake pads and discs; prevented by using the retarder and lower gears

Answer: D — Severe loss of braking friction due to extreme thermal overheating of brake pads and discs; prevented by using the retarder and lower gears

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