What does a raised hand with fingers extended generally indicate?

A raised hand with fingers extended is universally recognized as a signal to stop. This gesture is commonly used in various contexts to indicate that immediate action should be halted. In signal person training, it is crucial to understand this signal because it plays a vital role in safety and communication on construction sites, where heavy machinery is often in operation.

When a signal person raises their hand in this manner, it provides a clear and visible cue to operators and workers to cease movement or operations, thereby preventing accidents or injuries. This signal's effectiveness relies on its visibility and the understanding of all personnel involved, emphasizing the importance of clear communication in high-risk environments. Other options may represent different actions, but the extended fingers to indicate stopping is one of the most critical and recognized signals in safety protocols.