What is a characteristic of a flashing green light from air traffic control?

A flashing green light from air traffic control is a signal that indicates an aircraft is clear to taxi. This means that the pilot has received clearance to move their aircraft on the taxiway, usually in preparation for takeoff. This signal is crucial for ensuring safe movement on the ground, allowing pilots to proceed without entering an active runway or taxiway without proper authorization.

In the context of air traffic control communications, different light signals carry specific meanings. Aircraft are expected to understand and respond appropriately to these signals for the safety and efficiency of airport operations. The flashing green light is particularly important as it provides a clear indication that it is safe for the aircraft to begin its movement on the ground, which is a vital part of flight operations prior to takeoff.