FL1 (Lazio regional railways)

Orte–Fiumicino Aeroporto
Overview
Type	Regional rail
System	Lazio regional railways
Status	Operational
Locale	Rome, Italy
Termini	Orte Fiumicino Aeroporto
Stations	26
Daily ridership	65,000
Colour on map	Sign green
Website	ATAC (in Italian)
Operation
Opened	1994
Operator(s)	Trenitalia
Rolling stock	TAF FS Class E.464 Vivalto Carrozze piano ribassato MDVC
Technical
Line length	118 km (73 mi)
Number of tracks	2
Track gauge	1,435 mm (4 ft 8 1⁄2 in)
Electrification	3,000 V DC
Operating speed	48 km/h (30 mph) (average)
Route number	FL1
Route map The Lazio regional railways network.

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.

The designation FR1 appears only in publicity material (e.g. public transport maps), in the official timetables, and on signs at some stations. The electronic destination boards at stations show only the designation "R1".

The FL1, a cross-city route, runs from Orte, in the province of Viterbo, in a southerly direction over the Florence–Rome railway as far as Roma Tiburtina. It then continues, via the Pisa–Livorno–Rome railway east and south of Rome's city centre, to Roma Trastevere. Finally, it takes the Rome–Fiumicino railway to Fiumicino Aeroporto, in the comune of Fiumicino southwest of the city centre.

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.