What is the hand signal to indicate "stop"?

The hand signal to indicate "stop" in a hoisting context is represented by extending both arms, palms down. This signal is universally recognized and serves as a clear and visible command to halt all operations. The positioning of the arms ensures that the signal can be seen from a distance and is not easily misinterpreted, promoting safety on the job site.

Using both arms in this manner creates a broad visual cue, effectively reaching operators across the work area, especially in noisy environments where verbal communication may fail. This method of signaling reduces the risk of accidents or misunderstandings during crane operations, making it a crucial safety practice for hoisting operations.