The FL1 (until 2012 FR1) is a regional rail route forming part of the Lazio regional railways network (Italian: ferrovie regionali del Lazio), which is operated by Trenitalia, and converges on the city of Rome, Italy. The route operates over the infrastructure of the Florence–Rome railway, the Pisa–Livorno–Rome railway and the Rome–Fiumicino railway. Within the territory of the comune of Rome, it plays the role of a commuter railway. It is estimated that on average about 65,000 passengers travel on an FR1 train each day.