Skull and Crossbones
Universal symbol for poison, toxic substances, and mortal danger.
International · c. 1400 CE – present
Hazard & Safety
Warning, danger, and safety symbols from GHS, ISO 7010, and occupational safety standards.
5 symbols
Biohazard Symbol
Symbol warning of biological substances that pose a threat to living organisms.
International · 1966 – present
Radiation Warning Symbol (Trefoil)
International symbol warning of ionizing radiation hazards.
International · 1946 – present
High Voltage Warning
Warning symbol indicating the presence of high-voltage electrical hazards.
International · c. 1970 – present
Emergency Exit (Running Man)
ISO 7010 safety sign indicating the direction of emergency exits.
International · 1979 – present