Final answer:
After landing at a towered airport, you are not clear of the active until the controller gives you explicit instructions to do so.
Step-by-step explanation:
After landing at a towered airport, you are not clear of the active until the controller gives you explicit instructions to do so. This is to ensure that the air traffic control maintains control and separation of arriving and departing aircraft. The controller will provide specific instructions, such as taxi to a certain spot, hold short of a runway, or proceed to the gate. It is important to wait for clearance before moving on your own.