Which color code around a hospital indicates no immediate hazard?

• A. Blue
• B. Green
• C. Red
• D. Yellow

Answer: (A)

Color-coded safety signals in a hospital are used to communicate risk quickly so staff can know how to respond without stopping to assess details. In the system represented here, a blue indicator is used to show there is no immediate hazard present. It signals that the area is safe and routine operations can continue without special precautions.

Red is typically reserved for urgent emergencies that require immediate action, such as a fire or a medical crisis. Yellow denotes caution or a potential hazard that needs attention. Green is often used to indicate a safety-related status or a specific safety protocol, but not the absence of hazard in this scheme. So blue best fits the idea of “no immediate hazard” in this context.