What duration is the emergency evacuation signal typically maintained?

The emergency evacuation signal is typically maintained for 10 seconds to ensure that all personnel can clearly recognize the signal and respond appropriately. This duration is established to allow enough time for individuals to be alerted to the need to evacuate the area. During emergencies, clarity and immediacy are crucial, which is why a duration of 10 seconds strikes a balance between being long enough to be noticed and not so long that it causes confusion about the urgency of the situation. Other options might either be too short to provide adequate notice or unnecessarily long, which could lead to misinterpretation of the alert's seriousness.