FL lines
The FL lines, formerly Lazio regional railways consist of 8 commuter rail lines operated by Trenitalia, converging on the city of Rome. It operates as a combined suburban railway system that connects the city-centre and the outskirts of the city via a commuter rail line.
The FL network, initially made up of two lines and called FM lines, was formally inaugurated in 1994, following the signing of an agreement between the Lazio Region, the Municipality of Rome, the Province of Rome and Ferrovie dello Stato Italiane, aimed at implementing a new integrated transport structure in the Roman metropolitan and regional area.
Lines FL1, FL2 and FL3 function like a rapid transit service, integrated with the Rome Metro and surface transportation. The other lines mostly serve the suburban area of Rome and the Lazio region, and used almost exclusively for commuter traffic.
Lines
| Line | Terminals | Year opened | Daily ridership | Length | Stations | Operator |
| Orte - Fiumicino Aeroporto | 1994 | 65,000 | 26 | Trenitalia | ||
| Roma Tiburtina - Tivoli | 1994 | 22,000 | 13 | Trenitalia | ||
| Roma Tiburtina - Viterbo Porta Fiorentina | 1999 | 60,000 | 28 | Trenitalia | ||
| Roma Termini - Frascati / Albano Laziale / Velletri | 1994 | 55,000 | / / | 20 | Trenitalia | |
| Roma Termini - Civitavecchia | 1994 | 40,000 | 14 | Trenitalia | ||
| Roma Termini - Cassino | 1994 | 50,000 | 22 | Trenitalia | ||
| Roma Termini - Minturno - Scauri | 1994 | 40,000 | 13 | Trenitalia | ||
| Roma Termini - Nettuno | 2004 | 40,000 | 12 | Trenitalia |
Service
All eight lines are considered regional trains by Trenitalia. On timetables and departure boards at the stations the trains are marked with the letter R. The service timetable is based on a clock-face scheduling.Frequencies
Sections with one train every 15 minutes:- Fiumicino Aeroporto - Fara Sabina
- Roma Ostiense - Cesano di Roma
- Fiumicino Aeroporto - Fara Sabina - Poggio Mirteto
- Roma Tiburtina - Lunghezza
- Cesano - Bracciano
- Roma Termini - Civitavecchia
- Fiumicino Aeroporto - Poggio Mirteto - Orte
- Lunghezza - Tivoli
- Bracciano - Viterbo Porta Fiorentina
Fares
For all trips that take place outside the "Anello" ring, or that cross through the ring, the typical regional mileage rate applies.
Rolling stock
Much of the service is operated by double-decker trainsets, usually operating in double formations. The fleet of convoys operating on the network is made up of 388 trains on the entire Lazio railway network, distinguished according to service needs:- Treno ad alta frequentazione : introduced in 1998 and is the most used train on much of the network;
- Jazz: since 2014, used only on the FL4 line;
- E.464 + Vivalto: The E464 locomotive coupled to the Vivalto double-decker carriages, this type of train is mainly used on the FL5, FL6, FL7 and FL8 lines.
- ETR Rock: introduced in 2021, the new high-traffic train aimed at replacing the old TAFs, operating mainly on the FL1 and FL3 lines.
Planned extensions
In June 2022, 32 years after the 1990 FIFA World Cup, the Valle Aurelia - Vigna Clara route was reactivated with the related Vigna Clara stop, which will be a fundamental part of the so-called "Cintura-Nord", whose closure, expected for years, will to complete the Rome railway ring.
A year later, in June 2023, the Val d'Ala station was reopened, which is served by some trains of the FL2 line that leave and return from the "Roma Smistamento" depot.