An instruction to either not do an action, or to stop an action taking place.


  • Background colour is white.
  • Circular band and crossbar is red.
  • The symbol is black and is placed centrally on the background and should not obliterate the crossbar.
  • The safety colour red shall cover at least 35% of the area of the safety sign.
  • Border is white.

Supplementary Text Box:

  • Background colour is red.
  • Text colour is white.

Symbol Shape and Colour:

Examples of Prohibition Safety Signage Symbols:

Symbols with Supplementary Text Box:

Supplementary safety information, as text and/or in the form of a graphical symbol may be used to describe, supplement or clarify the meaning of a safety sign. The supplementary safety information shall be placed in a separate supplementary sign or included as part of a combination sign or a multiple sign.

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