CAF Signalling puts six latest generation interlockings into service on the Silla-Gandia commuter line

This action is part of the project for the renewal of the Circulation Remote Control System on ADIF’s Eastern Sub-directorate.


CAF Signalling, the CAF Group subsidiary specialised in Railway Signalling Systems, has commissioned the Silla-Cullera-Gandía section of the C1 commuter line in Valencia, corresponding to ADIF’s Eastern Operational Sub-Directorate of the Conventional Network. In total, the section is 53 kilometres long.

This new project, which modernises the line and incorporates advanced technology, includes the installation of six latest-generation Quasar Q4e interlockings.

The reform involves: the incorporation of AV led signals, axle counters, motorised shims, the renovation of the high line from electrical substations, the blocking with collateral stations, the deployment of ADIF IP/MPLS backbone network between Silla and Gandía, the deployment of signalling network and the migration of operating telephony to IP telephony throughout the section.

The migration of the ground-train communication system, the renovation of the access control and video surveillance systems and installation of the NEOSTAR alarm control system, the construction of two new technical buildings, one with a circulation cabinet, and the refurbishment of the four original buildings have also been carried out.

This commissioning includes another parallel action: the incorporation of the Alfafar – Gandía regulation band in the new Valencia Fuente de San Luis CTC. In this way, CAF Signalling makes its NAOS technology and ADIF’s new remote control architecture available. It also incorporates the new Q4 electronic interlockings, which communicate using ADIF’s standard protocol, as well as the migration of five old interlockings to the new CTC.

“This new commissioning once again demonstrates the excellent work and coordination with ADIF staff. In addition, we have demonstrated the high qualification of CAF Signalling, as our specialised team has carried out the telecommunications work in a comprehensive manner”, highlights Frédéric Charlemagne, CAF Signalling Operations Manager.