A traditionally triangular sign with an exclamation mark or diamond (⚠️) in the middle used to indicate dangerous areas/chemicals.

Specific warning signs

• biohazard symbol
• flammable symbol
• lightning bolt symbol
• radiation symbol
• skull and crossbones (poison symbol)

See also

• hazard stripes
• road sign
• Tag Group:Symbols

This tag implicates sign (learn more).

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