Revision question · The road

When may you use your vehicle's hazard warning lights while it's moving?

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 you've just overtaken another vehicle

When you need to reverse for some distance

When you're on a motorway and traffic ahead slows suddenly

When one of your lights has failed

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When you're on a motorway and traffic ahead slows suddenlyThis was the right answer

While moving, hazard warning lights may only be used on a motorway or unrestricted dual carriageway to warn drivers behind of a need to slow down, due to a hazard ahead.

Reviewed reading for this question

Rule 116Highway Code rule · While moving on a motorway or unrestricted dual carriageway, hazards may briefly warn following traffic of danger ahead.

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