Be very careful when driving in fog, especially at night. Fog can thicken quickly taking driver visibility to near zero. It can lurk in patchs that you can suddenly drive into. Obviously your speed needs to stay low giving
As you drive into fog check your mirrors and slow and down using your brakes so that the lights will warn any drivers following.
Use foglights if you have them and/or dipped headlights. Remembering to turn off any foglights when conditions improve. It is an offence to drive with a high intensity light on in clear conditions.
If you cannot see more than 40ft ahead then your speed should be decresed to 20mph.
Remember to use windscreen demisters and wipers to remove the build up of water on your windscreen, the fog may not be as thick as you think.
Be on the alert for any other drivers who may not be using their foglights or drive without caution.