Radioactive Warning Symbol - Universal Hazard Sign for Ionizing Radiation #1806318 (License: Personal Use)

This image shows the internationally standardized radiation warning symbol: a black trefoil (three-bladed propeller) centered in a yellow equilateral triangle with a black border. Designed in 1946 at the University of California, Berkeley, it conveys the presence of ionizing radiation and is mandated by regulatory bodies such as the IAEA and OSHA. Its high-contrast color scheme ensures visibility and immediate recognition in hazardous environments.

This image is commonly used on safety signage, educational materials, regulatory documentation, and emergency response guides to indicate radioactive sources or contaminated areas. It matches user intent for hazard awareness, safety training, or compliance information.