Revision question · The road

When may you use high-intensity 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 is seriously reduced, generally to about 100 metres or less

When visibility falls below 200 metres (656 feet)

When visibility falls below 300 metres (984 feet)

When visibility falls below 400 metres (1312 feet)

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When visibility is seriously reduced, generally to about 100 metres or lessThis was the right answer

Rear fog lights may be used when visibility is seriously reduced; headlights are required. Switch fog lights off when visibility improves, as their glare can distract others and obscure brake lights. The 100-metre figure is a general guide, not an exact universal trigger.

Reviewed reading for this question

Rule 226Highway Code rule · The approximately 100-metre guide is not an unconditional exact switch point or permission to keep dazzling fog lights on after visibility improves.Rule 236Highway Code rule · The approximately 100-metre guide is not an unconditional exact switch point or permission to keep dazzling fog lights on after visibility improves.

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