Air Traffic Skills Assessment (ATSA) Practice Test 2026 - Free ATSA Practice Questions and Study Guide

A flashing green light signal from a control tower indicates that a pilot is cleared to taxi. This signal is used to communicate with pilots during ground operations, clearly designating that it is safe for them to move their aircraft. Understanding the meaning of light signals is essential for pilots to ensure their compliance with ground control instructions and to maintain safety on taxiways and runways.

The other light signals have different meanings. For instance, a steady green light clears a pilot for takeoff, while a steady red light instructs the pilot to stop. A flashing yellow light indicates that the pilot should taxi with caution but does not provide clearance to proceed. These distinctions are critical for pilots to navigate and operate safely within airport environments.