Ulderigo Zona

Hitachi Rail STS France SAS designs, implements and maintains signaling equipment and automatic train control and supervision systems. Its products include TVM systems, TVM SACEMs, HBD-HWDs, track circuits and electronic treadles. The company was founded in 1902 and is headquartered in Les Ulis, France.

Metro 5 SpA operates as a concessionaire company for the design, construction, and operation of railway lines. It manages the fifth line of the Metropolitana di Milano, or the Line 5 of the underground railway of the province of Milan. The company was founded on June 5, 2006 and is headquartered in Milan, Italy.