In what situation would a signal person need to adapt their signals?

A signal person needs to adapt their signals primarily when environmental conditions change because these conditions can significantly impact visibility, sound, and the overall safety of operations. For example, in adverse weather such as heavy rain, fog, or high winds, the visibility between the signal person and the crane operator can be reduced, making it necessary to use more pronounced or distinctive signals to ensure clear communication. Additionally, environmental factors may necessitate adjustments in operating procedures to maintain safety and efficiency during lifting operations.

While the experience of the crane operator, the presence of additional personnel, and equipment malfunctions are important considerations in crane operations, they do not inherently require a change in signaling. The primary concern in signal adaptation is maintaining clear communication in response to factors that can affect the safety and effectiveness of lifting operations, which is predominantly influenced by changing environmental conditions.