What color is typically used to signal a stop during rigging operations?

The color typically used to signal a stop during rigging operations is red. This choice aligns with established safety practices and color-coded signaling systems used across various industries. Red is universally recognized as a color that indicates danger or the need for caution, making it an effective choice for signaling that operations must halt to ensure safety. In rigging contexts, where heavy equipment and materials are involved, clear and consistent communication through signaling is crucial to prevent accidents and injuries, and the use of red serves to convey this message unmistakably.