What does a flashing green signal for movement of vehicles and personnel indicate?

A flashing green signal for the movement of vehicles and personnel in an aviation context specifically indicates "Cleared to taxi." This signal is designed to communicate to ground personnel and vehicle operators that they are authorized to move.

The use of the flashing green light serves a vital function in maintaining safety and coordination at airports, particularly in busy terminal areas where multiple operations occur simultaneously. This signal differentiates from others, such as steady or flashing red signals, which would indicate wait or stop conditions.

Understanding the purpose of signals in air traffic control helps ground personnel react appropriately to evolving situations on the airfield. The signal helps ensure efficient movement while minimizing the risk of accidents, as it clearly conveys the permission needed for safe operation in controlled areas.