The first FL1 services between
Monterotondo-
Mentana and Fiumicino Aeroporto went into operation during 1994, bringing about an increased frequency of services on the lines through Rome. The route also included hourly trains between
Orte and Monterotondo-Mentana. Until 2000, the FL1 route divided into two sections near Fiumicino: one train in every four branched off to
Fiumicino Città, while the remaining services headed towards Fiumicino Aeroporto. Upon the introduction of the new timetable in 2000, the Fiumicino Città station was officially closed. On 7 December 2006, the new
Fiera di Roma railway station was opened to the public, and included in the FL1 route. == Stations ==