407. 視界
視界は、運転者が道路、他の道路利用者、危険を明瞭に見られ、同時に車両が他者から見える状態を指します。暗闇、霧、雨、雪、汚れ・曇りのある窓、まぶしさ、視野を遮る物などで低下します。窓、ミラー、灯火を清潔に保ち、視野を妨げる物を除き、視界低下時は適切な灯火を使用します。
What does visibility mean when driving?
Visibility describes how clearly a driver can see the road, traffic and hazards and how easily other road users can see the vehicle.
What can reduce visibility while driving?
Visibility can be reduced by darkness, fog, rain, snow, glare, dirty or misted windows and objects that obstruct the driver’s view.
How can you improve visibility while driving?
Keep the windscreen, windows, mirrors and lights clean, remove condensation or ice before driving and use the appropriate lights when conditions require them.
Can objects inside a vehicle obstruct visibility?
Yes. Objects placed on the dashboard, windscreen or elsewhere around the driver can block part of the field of vision and make it harder to detect road users or hazards.
What should you do when visibility is poor?
Reduce your speed, increase your following distance and use the appropriate lights. Make sure you can see far enough ahead to react safely to traffic and obstacles.
Why are mirrors important for visibility?
Mirrors extend the driver’s view to the rear and sides of the vehicle. They should be clean and correctly adjusted, although drivers must still check blind spots where necessary.

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