Revision question · Band 3 driving test, disabilities, law

You're driving in fog. When should high-intensity rear fog lights be used?

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 is reduced to 100 metres (328 feet) or less

When visibility is reduced to 125 metres (408 feet) or less

When visibility is reduced to 150 metres (490 feet) or less

When visibility is reduced to 175 metres (572 feet) or less

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When visibility is reduced to 100 metres (328 feet) or lessThis was the right answer

High-intensity rear fog lights are far brighter than normal rear lights. When visibility is reduced to 100 metres (328 feet) or less, they should be used to help drivers behind to see your vehicle. When visibility improves, these high-intensity lights should be switched off to avoid dazzling drivers behind.

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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