Revision question · Band 3 driving test, disabilities, law

You're driving in fog. When should you switch on your rear fog lights?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

When visibility has fallen to your overall stopping distance

When visibility has fallen to 10 car lengths

When visibility has fallen to 100 metres (328 feet) or less

When visibility has fallen to 200 metres (656 feet) or less

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When visibility has fallen to 100 metres (328 feet) or lessThis was the right answer

If visibility falls below 100 metres in fog, switching on your rear fog lights will help road users behind to see you. Don't forget to turn them off once visibility improves: they're very bright, so they might be mistaken for brake lights and they could dazzle other drivers.

Reviewed reading for this question

Rule 226Highway Code rule · Use dipped headlights in reduced visibility and fog lights only when visibility is seriously reduced, generally below 100 metres; switch them off as conditions improve.Rule 236Highway Code rule · Use dipped headlights in reduced visibility and fog lights only when visibility is seriously reduced, generally below 100 metres; switch them off as conditions improve.

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