Which safety sign type is used exclusively in life-threatening hazards?

Danger signs are specifically designed to communicate life-threatening hazards. These signs use bold colors and clear symbols to alert individuals to immediate risks that could result in serious injury or death if not heeded. Their bright colors and sharp graphics are intended to capture attention quickly, ensuring that those in the vicinity are aware of the severe danger present and can take necessary precautions or avoid the area altogether.

Caution signs, while important for indicating potential hazards, may not necessarily represent an immediate life-threatening situation. Warning signs serve to indicate hazards that require a level of awareness, but they may not signify the same level of urgency as danger signs. Advisory signs often provide information that is important for safety but does not relate to imminent threats, such as suggesting safe practices or providing general safety reminders. Thus, danger signs uniquely serve the purpose of alerting individuals to conditions that pose a serious, immediate risk to life and health.