hazard lights
US /ˈhæz.ərd ˌlaɪts/
UK /ˈhæz.ərd ˌlaɪts/
1.
a pair of flashing indicator lights on a vehicle, used to warn other drivers of a temporary obstruction or danger
:
•
When my car broke down, I immediately put on my hazard lights.
•
You should turn on your hazard lights if you're parked illegally or causing an obstruction.