 The line was extended to "Principe" in 1992, to "San Giorgio-Caricamento" in 2003, to "De Ferrari" (underground station at Piazza De Ferrari) in 2005, and to "Brignole" in 2012.In March 2018 the Italian government announced the investment for an extension of one station at either end of the line, "Canepari" to the northwest and "Martinez" to the east.In addition, a further three train sets would be bought to accommodate the extension