ANSI safety signs use standardized signal words, colors, and symbols to help people quickly understand the level and type of hazard they may encounter. Choosing the right signal word is important for communicating safety information clearly and consistently.

🔴 DANGER

DANGER identifies an imminent hazardous situation that, if not avoided, will result in death or serious injury.

Danger signs are reserved for the most severe hazards where immediate action is required.

Examples: High voltage, exposed electrical equipment, severe chemical hazards, or areas with an immediate risk of fatal injury.

🟠 WARNING

WARNING identifies a potentially hazardous situation that, if not avoided, could result in death or serious injury.

Warning signs communicate serious hazards that may not be immediately present but could cause severe injury if proper precautions are not followed.

Examples: Moving machinery, fall hazards, hazardous chemicals, or restricted industrial areas.

🟡 CAUTION

CAUTION identifies a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.

Caution signs are commonly used for everyday workplace hazards where appropriate attention and precautions can help prevent injuries.

Examples: Slippery floors, trip hazards, hot surfaces, or areas requiring personal protective equipment.

🔵 NOTICE

NOTICE communicates important information that is not directly related to personal injury.

Notice signs are typically used for property protection, procedures, policies, operational information, or other important instructions.

Examples: Equipment instructions, facility policies, parking information, or notices about potential property damage.

🟢 SAFETY / SAFETY INSTRUCTION

Safety-related signs communicate general safety information, procedures, or reminders and are intended to promote safe practices without indicating a specific hazard level.

Examples: Emergency procedures, first aid information, evacuation instructions, or general safety reminders.

Why Signal Words Matter

Using the appropriate signal word helps employees and visitors recognize the severity of a hazard at a glance. Combined with consistent colors, symbols, and clear messaging, ANSI-style safety signs make critical information easier to identify and understand—helping create a safer, more organized workplace.