What must you be aware of when you see this road traffic sign?

The traffic sign you see is a warning about the potential hazard of falling off a bank near a waterway.

1. **Road Leading to Water**: This sign indicates that you are approaching a road that leads directly to the bank of a waterway. Drivers must be cautious as this can be dangerous, especially if you’re not aware of the proximity of the water.

2. **Visibility Issues**: It’s important to understand that during low light conditions or poor visibility (like fog or heavy rain), water surfaces can blend with the road surface, making it difficult for drivers to distinguish where the road ends and the water begins. This increases the risk of accidents.

3. **Amphibious Vehicles Consideration**: Although the sign does not specifically mention it, maintaining clear access for amphibious vehicles is critical in such areas. These vehicles need designated entry and exit points, so it's vital for drivers not to block these areas.

By recognizing these points, drivers can take necessary precautions to avoid accidents and ensure a safer driving experience near waterways.