Where:
On any road where there is a temporary or unexpected hazard that requires drivers immediate attention.
These lights are usually mounted on traffic signals, vehicles, or roadside warning devices and are highly visible to alert drivers in advance.

Purpose:
To warn that there is a hazard ahead, which may not be immediately obvious.
The flashing light signals that drivers need to exercise caution, as conditions ahead could be dangerous.
Hazards can include roadworks, accidents, fallen trees, stalled vehicles, sharp bends, or other emergencies.

Action:
Reduce your speed as soon as you notice the flashing light.
Stay alert and look for additional road signs or instructions indicating the nature of the hazard.
Prepare to stop or maneuver safely if necessary.
Keep a safe distance from the vehicle in front of you and be ready to follow any directions from traffic officers or temporary traffic control devices.
Always proceed cautiously until you have safely passed the hazard.