As the months get colder fog is more common during the earlier hours - but it can disrupt drivers during rush hour commutes and much later in the day.
Although it is advised to avoid driving in heavy fog, many are unable to do so.
But to ensure safety on the road, it's important to know the key pieces of advice when driving in dense fog.
The most important thing to remember when driving in fog is to use your fog lights to make it easier to see and be seen in misty conditions.
The Highway Code states that motorists must use headlights when it isn't possible to see more than 100 metres in front of the car.
Drivers are also advised to use front or rear fog lights, however, this is optional.
Top tips for driving in fog
It is also important to note that if you find it to foggy drive and are finding it hard to concentrate, stop and avoid driving.
The front fog light symbol shows a lamp with slanting lines of light in front of it, pointing left. The lines of light are intersected by a wavy line which represents the fog.
The rear fog light symbol is the same as the front fog light symbol but in reverse. The light and fog lines appear after the bulb, pointing right.
