You’re driving on a motorway in heavy rain. When are you allowed to use high-intensity rear fog lights?

Explanation: Heavy rain and the resulting spray from large vehicles travelling at speed can seriously affect visibility on the motorway. Reduce your speed and use your headlights. Don't use high-intensity rear lights unless visibility is reduced to 100 metres (328 feet) or less.

Category: The Road

References: Highway Code: Rule 114, Highway Code: Rule 226