Radioactive Warning Symbol - Universal Radiation Hazard Sign #228536 (License: Personal Use)

This image displays the internationally recognized trefoil symbol for ionizing radiation, consisting of three black blades arranged symmetrically around a central circle on a vivid yellow field. Designed in 1946 at the University of California, Berkeley, it conveys immediate hazard awareness and is mandated by standards such as ISO 361 and IAEA regulations. Its high-contrast design ensures visibility and rapid recognition in emergency, industrial, and medical contexts.

This image is commonly used on safety signage, educational materials, regulatory documentation, and nuclear facility interfaces. It serves users seeking hazard identification, compliance guidance, or risk communication-especially in occupational safety, emergency response, and public health domains.