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Tips for driving in fog from the IAM

Driver training specialists at the Institute of Advanced Motorists (IAM) have been offering its tips on how to drive safely in a variety of challenging conditions for some weeks now. This week, head of training Simon Elstow offers advice on how to deal with fog.

  • Before setting off, clean your windows and windscreen and ensure all your lights are working. 
  • Let others know you are likely to be delayed.
  • When you’re ready to leave, switch on the dipped headlights. Only use front and rear fog lights where visibility is less than 100 metres.
  • Use your windscreen wipers on an intermittent setting to clear the fine mist that collects on there.
  • Slow down and keep enough distance between yourself and the vehicle in front. Make sure you can stop safely within the distance you can see clearly.
  • Avoid relying on the vehicle in front as a guide to hazards ahead. Fog makes it more difficult to judge how hard vehicles are braking and they might be slow to react.
  • Brake gently but earlier than usual so your brake lights warn drivers behind.
  • At junctions, wind the window down and listen for traffic.
  • Take high-viz clothing in case you have to leave the car.

Elstow said: “Don’t underestimate the effect fog has on your perception of speed. Adjusting your driving to the weather conditions will help you to become a better driver.”


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