In which circumstances may you use hazard warning lights?

A: When driving on a motorway to warn traffic behind of a hazard ahead

B: When you're double-parked on a two-way road

C: When your direction indicators aren't working

D: When warning oncoming traffic that you intend to stop

Hazard warning lights are an important safety feature. Use them when driving on a motorway to warn traffic behind you of danger ahead.
You should also use them if your vehicle has broken down and is causing an obstruction.

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