- Red are danger signs to inform to stop performing an action, to shut down, or to evacuate;
- Yellow or Amber are warning signs to inform potential hazards. Examples of yellow or amber signs are fire and explosion hazards, hot surfaces, trip hazards, and more.
- Blue are mandatory signs. It conveys information about a specific behavior or action, like requiring to wear protective equipment.
- Green are emergency escape or first-aid signs. It conveys information that first aid is available or it will take them on a safe route. Green signs are often used in emergency eye wash stations, evacuation routes, assembly points, and more.
The material provided in this article is for general information purposes only. It is not intended to replace professional/legal advice or substitute government regulations, industry standards, or other requirements specific to any business/activity. While we made sure to provide accurate and reliable information, we make no representation that the details or sources are up-to-date, complete or remain available. Readers should consult with an industrial safety expert, qualified professional, or attorney for any specific concerns and questions.