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 red line (the red part to take up at least 35% of the area of the sign)
Smoking cigarette with line through
No smoking
Lit match with line through
Naked flames forbidden
Person walking  with line through
No access for pedestrians
Flame with water being thrown from a bucket with line through
Do not extinguish with water
Person shouting and holding their hand up with line through
No access for unauthorised persons
Forklift truck  with line through
No access for industrial vehicles

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Updated 2021-11-18