What does a flashing red light at a lock indicate?

A flashing red light at a lock serves as a clear visual signal that signifies danger or an obstacle. Specifically, it indicates that vessels should maintain a safe distance from the lock and not approach. This warning is crucial for ensuring the safety of both the vessels and the operation of the lock itself.

When a flashing red light is activated, it typically means that the lock is either closed or not safe for passage, perhaps due to maintenance or the presence of other vessels within the lock chamber. This safety measure helps prevent accidents and ensures that potential hazards are communicated effectively to approaching vessels.

Understanding the implications of navigation lights, such as the flashing red light, is essential for safe boating practices, as it ensures that boaters can respond appropriately to changing conditions around locks and other critical waterway infrastructures.