ISO 7010
ISO 7010 is an International Organization for Standardization technical standard for graphical hazard symbols on hazard and safety signs, including those indicating emergency exits. It uses colours and principles set out in ISO 3864 for these symbols, and is intended to provide "safety information that relies as little as possible on the use of words to achieve understanding." It is distinct from the Globally Harmonized System of Classification and Labelling of Chemicals specified by the United Nations to standardise hazardous material classification and labelling.
, the latest version is ISO 7010:2019. This revision incorporates all previous corrigenda, as well as incorporates water safety signs and beach safety flags previously specified in ISO 20712.
Shape and colour
ISO 7010 specifies five combinations of shape and colour to distinguish between the type of information presented.| Sign type | Meaning | Colour | Shape | Example |
| Prohibition sign | Prohibition | Red | Circle with diagonal line | No open flame |
| Mandatory sign | Must do | Blue | Circle | Use hearing protection |
| Warning sign | Warn of hazard | Yellow | Equilateral triangle with rounded corners | Explosive materials |
| Safe Condition sign | Safety equipment & exits | Green | Square or rectangular | Emergency Assembly Point |
| Fire Safety sign | Fire Protection | Red | Square | Fire Extinguisher |