What signal must a signal person give to ensure visibility to the operator?

The requirement for a signal person to give a clear and visible signal is essential for safety during lifting operations. This is because clear communication is vital to prevent accidents and ensure that the operator can see and understand the signal being conveyed. Using a method that is both clear and visible allows the operator to quickly and accurately interpret the signal, minimizing the risk of misunderstandings that could lead to dangerous situations.

Visibility is crucial, especially in environments where machinery is operating, as visual cues can be affected by various factors like noise, distance, and obstructions. A clear hand signal, flag, or light can effectively communicate the necessary instructions, as opposed to signals that might be easily missed or misinterpreted, such as a small hand wave or a shout, which may not be distinct enough in a bustling site. Similarly, relying on a series of horn blows could cause confusion, as horn signals typically signify something different, such as an emergency or alert. Thus, ensuring the communication is both clear and visible is paramount for maintaining a safe working environment.