What equipment is recommended for communication in noisy environments?

Using hand signals is recommended for communication in noisy environments because they provide a clear and effective way to convey messages without relying on verbal communication, which can easily be lost in high-decibel settings. Hand signals allow operators and ground personnel to communicate essential information such as stopping, moving, or turning without the need for audible instructions, minimizing the risk of misunderstandings. This visual method of communication is universally recognizable and can be standardized among team members, making it safer and more efficient in scenarios where sound barriers exist.

In comparison, relying solely on verbal communication or yelling can lead to miscommunication, as voices can be drowned out by noise. Eye contact alone does not ensure the transmission of specific instructions and can be inadequate in situations where workers are spread out or not facing each other. Therefore, hand signals serve as a proactive measure to maintain safety and clarity in potentially hazardous working environments.