Which mechanism causes decreased braking effectiveness in a car's disc brake system after prolonged downhill driving?

💡 Explanation

When brakes are used continuously downhill, brake pad glazing occurs because excessive heat causes the resin in the brake pads to melt and form a smooth, friction-reducing layer on the pad surface. Therefore, pad glazing results, rather than fluid vaporization, rotor warping, or master cylinder failure, which require different triggering events.

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