Revision question · Band 1 road procedure

Why should you reduce your speed when you're driving in fog?

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

The brakes don't work as well as they do on a clear day

You could be dazzled by other people's fog lights

The engine runs colder and so uses more fuel than on a clear day

You won't be able to see as far ahead as you can on a clear day

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You won't be able to see as far ahead as you can on a clear dayThis was the right answer

In fog, you won't be able to see as far ahead as you can on a clear day. You'll need to reduce your speed so that, if a hazard develops, you have the time and space to take avoiding action.

If you can, try to delay your journey until the fog has cleared.

Reviewed reading for this question

Rule 126Highway Code rule · Avoid unnecessary fog travel, leave time, reduce speed and remain able to stop within the visible distance.Rule 226Highway Code rule · Avoid unnecessary fog travel, leave time, reduce speed and remain able to stop within the visible distance.Rule 235Highway Code rule · Avoid unnecessary fog travel, leave time, reduce speed and remain able to stop within the visible distance.

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