Q #246 - When are you allowed to use hazard warning lights?
You mustn't use hazard warning lights while moving, except to warn traffic behind when you slow suddenly on a motorway or unrestricted dual carriageway. Never use hazard warning lights to excuse dangerous or illegal parking.
When stopped and temporarily obstructing traffic
When travelling during darkness without headlights
When parked on double yellow lines to visit a shop
When travelling slowly because you're lost
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93%
Based on figures from 2017.DVSA National average 47%