Division 4
United Kingdom
The instructions in the table below apply to all signs incorporating a safety colour:
| Colour | Meaning or purpose | Instructions and information |
|---|---|---|
| Red | Prohibition sign | Dangerous behaviour |
| Danger alarm | Stop, shutdown, emergency cutout devices Evacuate | |
| Fire-fighting equipment | Identification and location | |
| Yellow or Amber | Warning sign | Be careful, take precautions Examine |
| Blue | Mandatory sign | Specific behaviour or action Wear personal protective equipment |
| Green | Emergency escape, first aid sign | Doors, exits, routes, equipment, facilities |
| No danger | Return to normal |