When should direct voice communication be used?

Direct voice communication is optimal when the operator and rigger are working in close proximity and the ambient noise levels are low. In such conditions, clear verbal communication can enhance safety and efficiency, ensuring that both parties can hear and understand each other without misunderstandings. This form of communication allows for immediate clarification of any instructions or signals, which is crucial when lifting loads or coordinating movements.

In scenarios with high ambient noise or when visual signals are not possible, other communication methods such as hand signals or radio communication may be more appropriate to ensure safety. Operating heavy machinery requires constant attention and precise actions, which can be achieved effectively through direct voice communication when conditions are favorable.