Radioactive Hazard Symbol - Universal Warning Sign for Ionizing Radiation #3796663 (License: Personal Use)

This image displays the internationally recognized radiation warning symbol (trefoil), consisting of three black blades spaced at 120-degree angles around a central circle, all enclosed within a yellow circular border and thick black outer ring. Designed in 1946 at the University of California, Berkeley, it conveys immediate visual alertness to ionizing radiation risks. Its high-contrast color scheme ensures visibility and recognition even under poor lighting or from a distance.

Commonly used on containers, doors, equipment, and signage in nuclear facilities, medical imaging departments, research labs, and transport vehicles carrying radioactive substances; matches user intent for safety education, regulatory compliance, or hazard identification.