Revision question · Leaving the vehicle

When should you use hazard warning 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

To warn other drivers that you're towing

When approaching queuing traffic on a motorway

When parked illegally on a busy road

To thank a driver for giving way to you

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When approaching queuing traffic on a motorwayThis was the right answer

The only time you may use hazard warning lights while driving is when you're on an unrestricted dual carriageway or motorway and you want to warn other drivers of a hazard or obstruction ahead. Only use them for long enough to make sure your warning is seen.

Reviewed reading for this question

Rule 116Highway Code rule · Use a brief hazard warning for an obstruction ahead on a motorway or unrestricted dual carriageway, not as thanks or an excuse for illegal parking.

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