256. 着氷性の雨
着氷性の雨は、過冷却された雨滴が冷たい道路、車両、その他の表面へ触れた瞬間に凍り、薄い氷膜を作る現象です。路面が凍っているように見えなくても非常に滑りやすくなります。減速し、車間距離を増やし、急な加速、操舵、制動を避けます。橋、日陰、未処理道路は特に危険になりやすく、降り続くと状況が急変します。
What is freezing rain?
Freezing rain is rain that freezes when it reaches a sufficiently cold surface, forming a layer of ice on roads, vehicles and other objects.
Why is freezing rain dangerous for drivers?
Freezing rain can create very slippery and difficult-to-see ice, greatly reducing tyre grip and making steering and braking more difficult.
Is freezing rain the same as snow?
No. Snow falls as frozen crystals, while freezing rain falls as liquid droplets that freeze when they reach a cold surface.
Can freezing rain cause black ice?
Yes. Freezing rain can create a thin, transparent layer of ice that is difficult to distinguish from a wet road and is often described as black ice.
How should you drive in freezing rain?
Reduce speed, increase your following distance and use smooth acceleration, steering and braking. Avoid unnecessary driving if conditions become extremely slippery.
Where is freezing rain most dangerous?
Extra caution is needed on bridges, exposed roads, shaded areas and untreated surfaces, where ice may form quickly or remain longer.

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