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What is TIS–B in Aviation? (Traffic Information Service – Broadcast)

Updated: March 11, 2024

Traffic Information Service – Broadcast (TIS-B): Enhancing Aviation Safety

In the ever-evolving field of aviation, safety is of paramount importance. Pilots and air traffic controllers rely on accurate and timely information to ensure the safe and efficient movement of aircraft. One vital tool that aids in this endeavor is the Traffic Information Service – Broadcast (TIS-B). TIS-B provides pilots with valuable situational awareness by broadcasting traffic data, improving safety and reducing the risk of mid-air collisions. In this article, we will delve into the intricacies of TIS-B and explore its significance in the aviation industry.

Understanding Traffic Information Service – Broadcast (TIS-B)

Traffic Information Service – Broadcast (TIS-B) is a technology that allows pilots to receive real-time information about nearby aircraft in their vicinity. It is a component of the Automatic Dependent Surveillance-Broadcast (ADS-B) system, which relies on aircraft broadcasting their own position, velocity, and other relevant data to ground stations and other aircraft. ADS-B enables air traffic controllers and pilots to have a more accurate and comprehensive picture of the airspace.

TIS-B takes the ADS-B data and enhances it by incorporating information from ground-based radar and other surveillance sources. This additional data is then broadcasted to aircraft equipped with ADS-B receivers, providing pilots with a more complete view of the traffic around them. TIS-B can display the position, altitude, groundspeed, and heading of nearby aircraft, allowing pilots to make informed decisions and avoid potential conflicts.

Benefits of Traffic Information Service – Broadcast (TIS-B)

1. Enhanced Situational Awareness: With TIS-B, pilots gain a deeper understanding of the traffic in their vicinity. By receiving real-time information about nearby aircraft, pilots can proactively adjust their flight paths and maintain a safe separation from other traffic. This heightened situational awareness reduces the risk of mid-air collisions and enhances overall safety in the airspace.

2. Improved Decision-Making: TIS-B equips pilots with crucial information that aids in making informed decisions. By knowing the position, altitude, and other relevant details of nearby aircraft, pilots can assess the potential impact on their flight path and adjust accordingly. This capability is particularly valuable in congested airspace or during adverse weather conditions when visibility may be limited.

3. Traffic Avoidance: One of the primary goals of TIS-B is to help pilots avoid traffic conflicts. By providing accurate and up-to-date traffic information, TIS-B enables pilots to identify potential conflicts and take proactive measures to avoid them. This can include adjusting altitude, changing course, or communicating with air traffic control to ensure a safe separation from other aircraft.

4. Cost-Effective Solution: TIS-B leverages existing infrastructure, such as ground-based radar and ADS-B technology, to provide traffic information to pilots. This makes it a cost-effective solution compared to other traffic surveillance systems. By utilizing the data already available, TIS-B enhances safety without requiring significant additional investment.

5. Seamless Integration with ADS-B: TIS-B seamlessly integrates with the ADS-B system, which is becoming increasingly prevalent in aviation. As more aircraft equip themselves with ADS-B transceivers, the availability and accuracy of TIS-B data will continue to improve. This integration ensures that pilots can access valuable traffic information without the need for additional equipment or complex procedures.


Traffic Information Service – Broadcast (TIS-B) plays a vital role in enhancing aviation safety by providing pilots with real-time traffic information. By incorporating data from ground-based radar and other surveillance sources, TIS-B improves situational awareness and enables informed decision-making. With its ability to help pilots avoid traffic conflicts and seamlessly integrate with the ADS-B system, TIS-B is a valuable tool in reducing the risk of mid-air collisions. As technology continues to advance, TIS-B is poised to play an even greater role in ensuring the safety and efficiency of air travel.

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