What is the function of a radiological warning sign?

The function of a radiological warning sign is primarily to signify contaminated areas. Such signs are essential in environments where radioactive materials may pose a threat to health and safety. By clearly marking these areas, individuals can be warned of the potential hazards and take appropriate precautions to avoid exposure to harmful radiation.

Radiological warning signs serve to prevent accidental entry into contaminated zones, thereby protecting personnel and the environment. These signs are critical in reconnaissance operations, allowing trained personnel to identify and communicate risks effectively.

The other options do not capture the specific purpose of a radiological warning sign. Signs indicating electrical hazards or traffic regulations pertain to entirely different areas of safety and risk management. Similarly, providing emergency contact information is essential during an emergency but does not relate to the specific function of a radiological warning sign.