Fog can be dangerous for drivers as it reduces visibility. Fog or mist can appear quickly, so you must know how to adapt to the conditions safely.
Before travelling please check our traffic alerts for road restrictions or closures. If there are closures on non-trunk roads, check with your local authority.
Before you travel
Check the forecast
If the forecast predicts thick fog or mist, consider whether your journey is necessary. Fog can appear and disappear quickly, so it may be worth waiting until the fog clears before starting your journey.
Understand your lights
Ensure you're familiar with your headlight and fog light settings and can confidently operate these whilst driving.
Check your vehicle
Ensure your vehicle is working and in service to reduce the chance of an unexpected breakdown.
During your journey
Fog lights
Use fog lights when visibility is significantly reduced and below 100 metres.
Dip your headlights
Ensure your headlights are dipped, and avoid using full beam as the fog reflects the light, reducing visibility even more.
Bad visibility
If you can't see, stop safely and wait until the fog has cleared before continuing your journey.