​Safety Signs
Safety signs convey specific safety information or instructions at a particular location, such as, laboratories, workshop, construction sites etc. In addition to the people working at the location, visitors to the location also get to know of the hazards and important safety information through the safety signs.
There are various categories of safety signs, as mentioned below:
Prohibition:
It instructs to stop a dangerous behavior, example: No Smoking. This sign has a black pictogram on a white background, with a red circular border and red diagonal cross line.

Warning:
It highlights a particular hazard at the location, example: Radiation Hazard. This sign has a black pictogram on a yellow background, with a black triangular border.

Mandatory Action:
It instructs people to take a specific action, example: Wear Hearing Protection. This sign has a white pictogram on a solid blue circular background.

Firefighting:
It is used to identify a particular type of firefighting equipment, example: Fire Extinguisher. This sign has a white pictogram on a red square/rectangular background.

Safe Condition:
It is used to identify a safe behavior, or a place of safety, example: Fire Exit. This sign has a white pictogram on a green square/rectangular background.