What role does the ADS-B system play in air traffic management?

The ADS-B system, which stands for Automatic Dependent Surveillance–Broadcast, plays a critical role in air traffic management by broadcasting the aircraft's position periodically. This system utilizes GPS data to determine the aircraft's precise location, which is then transmitted to air traffic control and other aircraft in the vicinity. This enhanced situational awareness allows for improved safety in the skies, enabling air traffic controllers to monitor aircraft more accurately and efficiently.

Moreover, the periodic broadcasts provide information not just on position, but also on velocity, altitude, and other flight parameters, contributing to a comprehensive picture of air traffic in real time. This function is particularly valuable in areas where radar coverage may be limited, allowing for better management of airspace and reducing the risk of mid-air collisions.

The other options, while they relate to aviation, do not accurately describe the primary function of the ADS-B system. For instance, while it is essential for communication, ADS-B is not a direct communication system between pilots. Additionally, it does not provide weather updates; that task is typically handled by separate systems. Lastly, while ADS-B does enhance situational awareness, it does not replace traditional navigation aids but rather complements them by providing additional data to pilots and air traffic controllers.