What is the role of ADS-B in air traffic control?

The role of Automatic Dependent Surveillance-Broadcast (ADS-B) in air traffic control is centered around its function as a preferred method of surveillance within the National Airspace System (NAS). ADS-B enhances situational awareness for both pilots and air traffic controllers by providing real-time position information. This data is derived from an aircraft's GPS and is broadcasted to other aircraft and ground stations, enabling better monitoring and safety in busy airspace.

By utilizing ADS-B, air traffic control can more accurately track aircraft, especially in areas where radar coverage may be limited. This reliability and efficiency are why it has become the preferred method for surveillance, as it improves traffic management and enhances safety.

In contrast, visual communication between pilots pertains to non-verbal cues and does not involve the technological advancements of ADS-B. While ADS-B does provide a more comprehensive surveillance option, it does not replace traditional radio communication; rather, it complements it by improving the information available to pilots and controllers. Lastly, ADS-B is utilized by both civilian and military aircraft, making it an integral technology across different aviation sectors.