'We are pleased to give a new impetus to mobility in the Naples metropolitan area with our ERTMS signalling system on more than 140 km of the line.' Michele Viale General Manager of Alstom Italy and President and CEO of Alstom Ferroviaria In addition, it is planned to upgrade the railway and technological installations and infrastructure works (stations, tunnels, works of art) on the Castellammare-Sorrento section allowing a maximum traffic capacity of one train every twelve minutes. The project also includes an Alstom solution for substations that saves energy and costs by feeding more than 99% of the energy generated by the train braking back into the grid. The work will be carried out by June 2026 and will only be done at night, so there won't be any service interruption for users.