Which individuals are allowed to act as signal persons?

The correct answer highlights the importance of competence and qualification when it comes to acting as signal persons. A signal person plays a crucial role in construction and heavy equipment operations, where clear communication is vital for safety.

A competent signal person not only understands the relevant signals and the equipment being operated but is also trained to recognize potential hazards in the work environment. This ensures that they can provide effective guidance to operators and help prevent accidents or injuries on the job site.

Training and experience equip these individuals with the necessary skills to make informed decisions in various scenarios, adapting to the specific conditions of the work site. This level of preparedness is essential for ensuring that operations are conducted safely and efficiently.

Other options do not emphasize the required level of experience and training necessary for this role, which can increase risks on the job if not properly addressed.