A black exclamation mark in a yellow triangle.
Also known as: Warning triangle, Caution sign, Exclamation mark triangle, Hazard triangle
An exclamation mark in a yellow triangle is the general warning sign — the one used when a hazard has no pictogram of its own. It says a hazard is present without saying which, so it is almost always accompanied by text.
Warns that a hazard is present and care is needed, without specifying what the hazard is.
Contexts: Public information
Is the fallback of the warning family, used where a hazard has no dedicated pictogram, which is why it nearly always appears with explanatory text beneath it.
Contexts: Public information
Is distinct from the GHS exclamation mark pictogram, which is a red-bordered diamond used on chemical packaging and carries a defined set of hazard classes rather than a general caution.
Contexts: Public information
Belongs to the warning class of safety signs, drawn as a black pictogram in a yellow triangle with a black border. The triangle means a hazard is present and care is needed, not that anything is prohibited.
Contexts: Public information
A thick black exclamation mark standing upright in the centre of a yellow triangle with a heavy black border, the triangle pointing up.
Both put an exclamation mark inside a bordered shape; the GHS pictogram is a red-bordered diamond on packaging, this is a yellow triangle on signage.