Our experts equip seven tunnels and install 62 GSM-R outdoor radio sites, including a tree tower, ensure GSM-R coverage of the 320 km of railway line. The work is being carried out in two phases on a line in operation and since March 2021, has been taking place during Temporary Traffic Interruptions (TTI) booked in advance with SNCF .
“In addition to the design and layout of the pylon foundations, technical slabs and accesses, we are assembling the pylons at each site and lifting them at night. We also lay the antennas, install and commission the technical cabinets (power and radio) and fit out the tunnels” explained business manager Alain Trouvé.
The technology chosen by SNCF is called Global System for Mobile communication for Railways (GSM-R). It enables traffic regulators to manage call priority and simultaneously reach a group of trains geographical area. The system facilitates communication in the event of an incident, thereby enhancing traffic and passenger safety.