If it starts to rain on a hot day, the road is most slippery:
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If it rains in the afternoon.
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For the first few minutes.
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After it has been raining for a few hours.
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After it has stopped raining.
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Explanation
Rain on a hot day can make the road very slippery. This is because the heat causes the oil in the asphalt to come to the surface. When the rain mixes with this oil, it creates a slippery surface that can cause your tires to lose their grip. To avoid an accident, it is important to slow down at the first sign of rain, as this is when the road is most slippery.
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