Fallout Shelter Sign - Official Radiation Warning & Safety Indicator #102491 (License: Personal Use)

The image displays a standardized U.S. civil defense fallout shelter sign from the Cold War era, featuring a black trefoil radiation symbol on a yellow background, with bold “FALLOUT SHELTER” text and two downward-pointing arrows on a black band below. Designed for high visibility and instant recognition, it was posted at designated shelters in public buildings, basements, and bunkers. The sign remains a globally recognized symbol of nuclear hazard response and emergency sheltering protocols.

Used in historical documentation, emergency management training, museum exhibits, civil defense resources, and survivalist guides; matches user intent for identifying safety signage, researching Cold War history, or preparing for radiological emergencies.