noun
hazard flashers; hazard warning lights; emergency lights
Refers specifically to the blinking lights on a vehicle used to indicate a hazard or emergency. A wasei-eigo term derived from English 'hazard lamp'.
wasei-eigo (Japanese-coined English), from hazard lamp
事故車はハザードランプを点滅させていた。
The damaged car had its hazard lights flashing.
駐車するときはハザードランプをつけ
Please turn on your hazard lights when parking.