What signal indicates a clear condition for aircraft crossing according to control tower signals?

A steady green light signal is universally recognized as an indication that it is safe for aircraft to proceed, particularly in the context of crossing runways or taxiways. This signal informs pilots that the area is clear and that they may continue their operations without delay.

In air traffic control terminology, this signal helps ensure that communication is clear and unambiguous, crucial for maintaining safety in busy or complex airport environments. The steady green light directly conveys permission to move, making it a vital aspect of managing aircraft movements on the ground.

This clarity helps pilots to maintain situational awareness and adhere to environmental requirements, contributing to overall flight safety.