What is indicated by a red light signal from the control tower?

A red light signal from the control tower indicates that an aircraft must immediately clear the runway or taxiway. This signal is a critical alert for pilots, as it emphasizes the need for immediate action to ensure safety. The signal may be used if there is an emergency situation, an aircraft is on the runway when it should not be, or to prevent a potential collision.

Recognizing a red light signal is vital for maintaining situational awareness and adhering to air traffic control instructions, thus protecting both the pilot and other aircraft in the vicinity. Understanding what different light signals mean is essential for every pilot, as it directly affects the safety of their flight operations.