What should be kept in mind regarding the use of 2-way radios for signaling cranes?

Having spare batteries for two-way radios used in signaling cranes is crucial for maintaining effective communication on the job site. Two-way radios are essential tools for signal persons since they allow for real-time communication between the crane operator and ground crew, ensuring safety and coordination during lifting operations. If the radio battery dies, this line of communication is lost, which can lead to dangerous situations, misunderstandings, or accidents. By ensuring that spare batteries are readily available, users can minimize downtime and ensure that all team members can communicate effectively throughout the operation.

The other options may indeed contribute to effective radio use in certain ways, but they do not address the immediate necessity of ensuring that the radios are powered and functional at all times.