Aim:The rehabilitation of 68.055 km of existing line (69.251 km after the modernisation) up to the technical parameters set down in the international agreements AGC, AGTC, TER.The modernisation works include embankments, railway superstructure, works of art (tunnels, viaducts, bridges, culverts), buildings, platforms, domes, the supply of unlevelled pedestrian access to the platforms nd of electri ...