What to do in specific emergencies?
- Travelling in thick fog can be extremely dangerous. Fog can drift rapidly and is often patchy. Warnings of dense fog are issued when visibility is expected to fall below 200 metres. Severe disruption to transport occurs when the visibility falls below 50 metres.
- If your journey is essential, allow plenty of time
Protection during Dense Fog
- Avoid travel if possible
- Drive slowly using dipped headlights (full beam lights reflect off the fog causing a white wall effect)
- Use fog lights, but remember to turn them off when visibility improves
- Don't hang on the tail-lights of the vehicle in front as rear lights can give a false sense of security
- Watch out for freezing fog which is made of water droplets that freeze on contact with surfaces such as the pavement, road, car etc.. It can quickly form a layer of ice
- Listen to travel news on the car radio to avoid problem areas
- Use the wipers and demister to keep the windscreen clear
- Beware of other vehicles without lights
- If visibility is poor, lower the window to listen for traffic sounds
- If stopped in thick fog, use your hazard flashers to warn other drivers of a stationary vehicle. Turn flashers off if there are vehicles behind you who are aware of your presence
- Be wary of the sleep inducing effect of dense fog - wind down the window, talk to passengers, take frequent breaks