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What should you do if you park on the road when it's foggy? What should you do if you park on the road when it's foggy?

  • Possible answers:

     
  • A. Leave sidelights switched on

  • B. Leave dipped headlights and fog lights switched on

  • C. Leave dipped headlights switched on

  • D. Leave main-beam headlights switched on

 
 

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Driving in adverse weather conditions: Fog

Rule 234

Before entering fog check your mirrors then slow down. If the word ‘Fog’ is shown on a roadside signal but the road is clear, be prepared for a bank of fog or drifting patchy fog ahead. Even if it seems to be clearing, you can suddenly find yourself in thick fog.

Rule 235

When driving in fog you should

Rule 236

You MUST NOT use front or rear fog lights unless visibility is seriously reduced (see Rule 226) as they dazzle other road users and can obscure your brake lights. You MUST switch them off when visibility improves.
Law RVLR regs 25 & 27