Correct answer
Because water mixes with residue to form a slippery film.
Water mixes with accumulated dust, grease and other residue, forming a slippery film. Reduce speed and increase the gap. This does not mean it is always the highest-risk moment: heavy rain, standing water and poor visibility can also be very dangerous.
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Because wipers can operate only in heavy rain.
Because tyres always retain the same grip when wet.
Because water mixes with residue to form a slippery film.
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