AŽD is expanding its technology testing on the EDITA experimental autonomous vehicle to include Starlink satellite communications

EDITA already uses several independent communication networks, each with different functions. The GSM-R network provides voice communication with the dispatcher via the on-board radio. At the same time, it transmits data between the on-board part of the European Train Control System (ETCS) and the Radio Block Centre under ETCS Level 2 mode. Automatic Train Operation is also included on the top of this safety system.

The dedicated 5G network is used to exchange data between the vehicle and the track-side part of the autonomous operation system at GoA3 grade of automation (under the supervision of a train operator) and at GoA4 (fully automated operation). Through this network, the vehicle receives, among others, information from track-side sensors and secured level crossings. The newly tested Starlink satellite connection expands the vehicle’s communication capabilities by adding another independent transmission channel.

“With the Starlink system, we want to verify the transmission speed, latency, and signal availability along the railway line. We’re interested in whether it can effectively supplement existing ground networks and provide a backup connection even in areas where their coverage is insufficient. For autonomous operation, it is important that communication between the vehicle and the infrastructure be resistant to outages or limited availability of any of the networks,” explains Antonín Diviš, deputy R&D director of AŽD.

The test results will help determine for which communication tasks and under what operating conditions the satellite connection can be used. AŽD is thus using the EDITA vehicle to gather practical data for the further development of a communication solution that will enable the combination of various transmission technologies and ensure mutual redundancy.