Which communication method is recommended for staff during an emergency evacuation?

Using megaphones or two-way radios is recommended for staff during an emergency evacuation because these methods provide clear and effective communication over long distances, especially in a noisy environment like a shelter during an emergency. Megaphones amplify the voice, ensuring it can be heard above the chaos, while two-way radios allow for immediate, direct communication among staff members to coordinate actions and relay important information.

In contrast, text messaging may be hindered by network issues during an emergency when many people are using their devices simultaneously, which could delay critical communication. Shouting instructions can lead to confusion and may not carry effectively in a large space, while using loudspeakers alone may not be effective if not all staff are in earshot or if the power fails. Thus, the choice of megaphones or two-way radios combines clarity, reliability, and real-time interaction, making it the most effective communication method during an emergency evacuation.