What does an alternating yellow and green light signal from ATC indicate?

An alternating yellow and green light signal from Air Traffic Control indicates that the pilot should proceed to taxi from the runway to the taxiway. This signal is often used in situations where a transition from one phase of aircraft movement to another is necessary, such as from landing to taxiing to a ramp or waiting area.

Understanding the purpose of different light signals is crucial for pilots, as they facilitate communication between pilots and air traffic controllers, especially at busy airports or during low-visibility conditions. The alternating light colors specifically guide the pilot about safe navigation on the airport surface, ensuring they follow protocols that enhance safety and operational efficiency.

In the context of the other options, clear to land would typically be indicated by a steady green light, preparing for immediate takeoff is not represented by this specific alternating signal, and emergency landing procedures do not correlate with alternating yellow and green lights. Therefore, the correct interpretation of the light signals is essential for maintaining safe and efficient operations at the airport.