The scope of the services included:
The infrastructures involved were the stations of Sant Cosme, Plaza Catalunya, In-termodal, Eixample Nord, Verge de Montserrat, Terminal entre Pistas, Ciudad Aeroportuaria, Terminal Actual, Mercabarna, Parc Logístic, Amadeu Torner and Mas Blau, as well as the ventilation shafts and associated sections of tunnel (6 km).