You should allow a four-second or more cushion when:
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Following motorcyclists on wet roads.
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Driving on slippery roads.
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All of the above.
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Explanation
On slippery roads, the increased distance allows for greater stopping time due to reduced traction. When following motorcycles, the extra space provides a buffer in case the motorcycle loses control or needs to maneuver suddenly, reducing the risk of a collision and allowing you more time to react safely.
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