The project provides for the design and development of the works to complete the doubling of the Cumana railway line (which connects Naples to Pozzuoli) along a roughly 5 km stretch between the Dazio and Cantieri Stations). In addition to the work to equip the new track, the contract includes the construction of two new stations (Pozzuoli and Cantieri), a tunnel about 500 metres long (the Monte Olibano Tunnel), consolidation of various sections of the slope overlooking the railway line and the adaptation of the tunnels’ safety systems along the line.