危險警告燈是車身四邊同時閃亮的警告燈，車輛因故障或緊急事故而在快速公路或車速限制超過每小時 50 公里的道路上停留不動時，必須亮起。
Hazard warning lights are the four-way warning lights that must be switched on when a vehicle is stationary on an expressway or a road with a speed limit exceeding 50 km/h because of a breakdown or emergency.