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Top tips for driving safely in fog

Ellie Dyer-Brown, 1 year ago

3 min read

  • Advice
  • howto
  • tips
Driving in the Fog

WhoCanFixMyCar offers some advice on how to drive safely when bad weather hits

There are many things to love about the UK, but our weather unfortunately isn’t one of them. Our winters are grim and bleak, and during those glorious few months of sunshine in the summer, we have a tendency to complain that it’s too hot. 

The thing is, us Brits just love to talk about the weather. Awkward conversation with someone whose name you can’t quite remember? Weather. Socialising with a colleague who shares no common interests? Weather.

We especially like to melt down (er, pardon the pun) when it snows. But there’s another type of weather that is, in many respects, just as challenging when you hit the road: fog.

At WhoCanFixMyCar, we believe fog deserves as much caution and consideration from drivers as snow, which is why we’ve put together this guide.


Before you set off

Driving in fog

What not to do

Suggested reading

Before you set off

For any journey where you know you’re likely to hit bad weather, it pays to plan in advance. There are a few things you can do to make sure that you’re well prepared:

Check your brakes

When it’s foggy, not only is your visibility reduced, the road is also often wet, meaning it can take longer to stop. Couple that with the risk of unforeseen hazards and it becomes clear that your brakes are more important than ever. 

If yours don’t work as well as they used to and are showing signs of wear and tear, it’s a good idea to avoid driving in foggy conditions until you’ve had them repaired or serviced.

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Pack emergency supplies

In the event that you have to stop mid-way through your journey due to bad weather, having some supplies stored away in the boot will come in handy, such as:

  • A torch

  • Water

  • Blanket/spare clothes

  • Phone charger

  • Hi-Vis vest

  • Food

Plan your route

Spend five minutes planning out your route before you set off. This will allow you to work out whether the bad weather is avoidable, and it’ll also mean you can drive with more confidence. Don’t forget to factor in extra driving time since you’ll have to go slower than usual.

Driving in fog

Use the right lights

According to The Highway Code, you must use dipped headlights when you can’t see more than 100 metres in front of you (for anyone who can’t visualise what 100 metres looks like, it’s roughly the size of a football pitch), but using front or rear fog lights is actually optional. 

If you have them and the fog is thick enough to warrant using headlights, especially if it’s dark, we’d always recommend using your fog lights, too. Additional visibility is never a bad thing! However, make sure you turn them off when visibility improves or you’ll dazzle other drivers.

Instinct might tempt you to use full beam headlights, but this is actually counterproductive because the fog will reflect all that bright light straight back at you. 

Driving in the Fog 2

Keep your distance

When you enter an area of fog, slow down and make sure the gap between you and the car in front is big enough; whereas normally it should be two seconds, in fog it should be four. 

Watch your speed

Because visibility is severely reduced in foggy conditions, maintain a speed that will allow you to stop within the area that you can see.

You never know what’s around the corner, so it’s best to drive steadily until you’re out of the other side. 

Roll down your windows

When you reach a junction, rolling down your windows can help you to hear approaching traffic even if you can’t see it. 

Follow road markings

When we drive, we usually keep our eyes on the road ahead. But what if we can’t see the road ahead? A good bit of advice is to keep your eyes on the road markings that are a little bit closer to your car that are illuminated by your headlights. This will help you stay within your lane and follow any curves despite reduced visibility.

However, as we mentioned earlier, it’s vital that you drive slowly because you can’t see any hazards that might lie ahead.

Keep your windscreen clear

Use your windscreen wipers and demister to make sure that you have the best possible visibility.

Wait until it’s safe

Driving in fog might not be discussed as much as driving in snow or ice, but it can be dangerous and should be treated with equal caution. Don’t feel pressured to drive because it’s “just fog”; if you’re really struggling to see and you don’t feel comfortable, the safest thing to do is to wait until the fog passes. 

Plus, never stop in a place where you could cause an obstruction for another driver - when you pull over, make sure you do so in a place where it’s safe to stop.

What not to do

When driving in fog, you shouldn’t:

  • Rely on the tail lights of the car in front for direction

  • Rely on daytime running lights alone

  • Rely on automatic lights

Suggested reading

To find out more about driving in difficult conditions, check out the following guides:

The best way to find out if your car is safe to drive in challenging conditions is to book a winter health check.