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)

Image of a no smoking sign

No smoking

Image of a smoking and naked flames forbidden sign

Naked flames forbidden

Image of a no access for pedestrians sign

No access for pedestrians

Image of a do not extinguish with water sign

Do not extinguish with water

Image of a no access for unauthorised persons sign

No access for unauthorised persons

Image of a no access for industrial vehicles sign

No access for industrial vehicles

Driving for work

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