414. 日光
日光は、太陽が低い位置にある場合や、濡れた道路、雪、建物、他車から強い光が反射する場合に視界を低下させます。まぶしさにより信号、標識、歩行者などを見つけにくくなることがあります。必要に応じて減速し、フロントガラスを清潔に保ち、サンバイザーや適切なサングラスを使用し、一時的に隠れた危険へ対応できる余裕を持ちます。
Why can sunlight be dangerous when driving?
Bright or low sunlight can cause glare and temporarily reduce visibility, making traffic lights, signs, pedestrians and other road users more difficult to see.
When is sun glare most likely to cause problems?
Glare is often strongest when the sun is low in the sky, particularly around sunrise and sunset, and when sunlight reflects from wet roads, snow, glass or other bright surfaces.
What should you do when sunlight makes it difficult to see?
Reduce speed and increase your following distance so you have more time to react. Use the sun visor where helpful and avoid continuing at a speed that is too high for the available visibility.
Can a dirty windscreen make sun glare worse?
Yes. Dirt, grease, dust and streaks on the glass can scatter bright sunlight and make glare much worse. Keep the windscreen clean inside and outside.
Can sunglasses help while driving in bright sunlight?
Suitable sunglasses can reduce glare and improve visual comfort in bright conditions. They should not be so dark that they significantly reduce visibility, especially when entering tunnels or shaded areas.
Does a sun visor improve visibility?
Yes. A correctly positioned sun visor can block direct sunlight without unnecessarily obstructing the driver’s view of the road.

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