What does raising one arm overhead signify during crane operations?

Raising one arm overhead during crane operations is a universal signal for indicating to the operator that they should hold the load at that level. This action is crucial for ensuring safety on a work site, as it communicates to the crane operator that the load should not be moved up or down at that moment. This signal might be given when there are unexpected situations or changes in the work area that require the load to remain stable and stationary.

Understanding this signal is essential for maintaining effective communication among the crew members and ensuring safe operations. By clearly indicating the need to pause and hold the load, it helps prevent accidents or mishaps that could occur if the load were to be inadvertently moved while people are working nearby.