Radioactive Warning Symbol - Universal Radiation Hazard Sign #3089313 (License: Personal Use)

This high-contrast trefoil symbol, with three bold yellow blades radiating from a central circle against a black background, is the internationally standardized sign for radiation hazards. Designed by the U.S. Department of Energy in 1946 and later adopted by the IAEA, it conveys immediate visual warning without language dependency. Its glossy, gradient rendering enhances visibility and modern digital usability.

Commonly used on nuclear facilities, medical imaging rooms, radioactive material containers, and safety signage; matches user intent for hazard awareness, regulatory compliance, or educational content about radiation safety.