What hazard is increased by having multiple signal persons on site?

Having multiple signal persons on site can indeed lead to conflicting signals, which creates confusion among equipment operators. When more than one signal person is providing instructions, there is a high likelihood that they may issue different commands or signals, making it difficult for the operator to determine which direction to follow. This confusion can result in serious safety risks, as operators may inadvertently follow incorrect signals, potentially leading to accidents or dangerous situations on the job site.

In contrast, having a single, clearly designated signal person ensures that instructions are consistent and coherent, significantly reducing the chance of misunderstandings and enhancing overall safety and effectiveness in operations. The other options, while they may have some relevance in a broader context, do not specifically address the immediate risk associated with having multiple signals at once.