Driver training specialist IAM Drive & Survive is offering weekly motoring tips to drivers from its head of training, Simon Elstow.
This week he is advising motorists on how to drive in the fog:
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Before setting off, clean your windows and windscreen and ensure all your lights are working.
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Let others know you are likely to be delayed.
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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.
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Use your windscreen wipers on an intermittent setting to clear the fine mist that collects on there.
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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.
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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.
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Brake gently but earlier than usual so your brake lights warn drivers behind.
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At junctions, wind the window down and listen for traffic.
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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.”