How does air traffic control ensure collision avoidance?

Air traffic control ensures collision avoidance primarily by maintaining communication with pilots to avoid potential conflicts. This communication process is essential as it allows controllers to provide timely information about traffic, weather conditions, and any necessary adjustments to flight paths. Through continuous updates and instructions, air traffic controllers can coordinate the movements of multiple aircraft in a way that prevents potential collisions, facilitating safe takeoffs, landings, and in-flight operations.

The emphasis on communication highlights the active role air traffic control plays in air safety. By engaging directly with pilots, controllers can disseminate critical information, issue clearances, and monitor compliance with safety protocols. This proactive approach helps to keep separation standards between aircraft at all times.

Other options do not align with safe operational practices. For instance, instructing pilots to fly at maximum speed doesn't enhance safety; rather, it could increase the risk of accidents. Relying solely on onboard navigation systems overlooks the need for real-time situational awareness that air traffic control provides. Lastly, permitting multiple aircraft to land simultaneously can lead to dangerous situations if not carefully managed, as it requires precise timing and clear communication to ensure safe landings.