The number of multilateration systems (including wide-gap) continues to grow. It is planned to create more than 20 new zones. A large-scale deployment initiative is reported
in the Alpine region, as well as systems in Greece, Romania, the Baltic States and Denmark. All new systems are likely to be able to provide ADS-B data. The use of multilateration at airports will also be increased and continued. It states plans to install and upgrade about 30 multilateration systems between 2018 and 2020.
In the long run, and as secondary radar malfunctions, wide-area multilateration will increasingly play the role of an alternative. Some countries, such as Italy, Finland, Croatia, and the Slovak Republic, will deploy additional projects. The UK and Hungary also have similar plans, data from their systems, however, will not be integrated into a single EU ATM system.