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 |
