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SUBJECT 4 · EMERGENCY AVOIDANCE

Which road surface is most prone to skidding?

A
Dry cement pavement.
B
The road surface at the beginning of the rain.
C
Moist concrete pavement.
D
The road surface in heavy rain.
ANSWER · B
When the rain just starts, it wets substances on the road surface, making the road like a layer of thin lubricant. As rainwater accumulates, the lubricant on the road is diluted; in heavy rain, it is washed away completely. However, even when the road is washed clean by rain, you cannot drive fast carelessly, because rubber tires lose much of their grip on a wet surface.
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