What action is indicated by a green tower beacon?

A green tower beacon typically signals that a system is ready for operation. This indicator is a universally recognized color code in industrial settings, where green generally denotes a safe or operational state. When operators see a green light, it assures them that the equipment or system is functioning correctly and is available for use, providing confidence in the operational status.

In contrast, other indicators suggest caution or issues. For example, a red beacon usually signifies a system failure or a critical warning that requires immediate attention, while a yellow or amber light may indicate maintenance or an operational state requiring caution. Therefore, the green light's role is clear: it is an affirmation that the system is active and fully operational, allowing users to proceed without concern.