Final answer:
The light gun signals that mean clear the active runway are the steady green light and the green flashing light. These signals are crucial for maintaining safe operations at airports.
Step-by-step explanation:
The light gun signals that mean clear the active runway are the steady green light and the green flashing light.
When the air traffic controller wants to communicate to the pilot that the runway is clear, they will use either one of these two signals. The steady green light indicates that the pilot is cleared to take off or land, while the green flashing light indicates that the pilot is cleared to taxi.
These signals are crucial for maintaining safe operations at airports, and pilots are trained to recognize and respond to them appropriately.