Health and Safety Executive

Prohibitory signs

Prohibition sign - a sign prohibiting behaviour likely to increase or cause danger (eg no smoking)

Intrinsic features:

  • round shape
  • black pictogram on white background, red edging and diagonal line (the red part to take up at least 35% of the area of the sign)

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Health and Safety Executive
Caerphilly Business Park
Caerphilly CF83 3GG

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Updated 12.08.09