FS SIGNALING carries out railway signaling work in signal boxes (all-relay interlocking with sectional route release, all-relay interlocking with geographical circuitry, computer-controlled all-relay interlocking, computerized signal box, etc.) , centres and on the track (signals, point control, detection and heating, railroad crossings, electromechanical and electronic detectors, analog and digital KVB balises, fixed rail contact, track circuits, etc.) as well as inspections, technical checks and operating tests.

FS SIGNALING also carries out telecommunication work, optical fibre jetting, installation and maintenance of signaling equipment for industrial sidings (private sidings, port authorities, industry and private tracks), in addition to work on urban transport systems (metro, tram and tram-train).