Where:
On any public road, particularly where the roadway bends sharply to the left or right.
These signs are often found in mountainous areas, hilly terrain, or along roads with limited visibility.
They are placed well in advance of the curve to give drivers enough time to reduce speed and prepare for the change in direction.

Purpose:
To warn that the road ahead makes a sudden and pronounced change in direction.
The sign alerts drivers to the need for extra caution, as sharp curves can be dangerous if taken at high speed.
They may also limit your view of oncoming traffic, pedestrians, cyclists, or obstacles in the roadway.

Action:
Reduce speed immediately before entering the curve.
Approach slowly enough to maintain full control of the vehicle.
Select the correct gear before turning, especially when driving downhill, to help control speed without overusing the brakes.
Keep to your lane and follow the curve smoothly using steady steering movements. Avoid jerky or sudden turns.
Do not overtake on or near a sharp curve, as your view of oncoming traffic is restricted.
Stay alert for vehicles approaching from the opposite direction that may cut across lanes.
Ensure your speed allows you to stop safely within the visible distance ahead, particularly in poor weather or at night.