Rome is served by an integrated public transport system – Metrebus - operated by the companies Atac - Cotral - Trenitalia SpA. The system was realized in 1994 and includes a network of metro, bus, tram and metro-type rail services. Passengers can travel on the means owned by the three allied companies without distinction, according to the conditions and validity of the purchased ticket. The system is made up of Metrebus Roma, that allows passengers to use all public transport services within the metropolitan area of Rome, and Metrebus Lazio that allows mobility on the whole Lazio region. The region territory has been divided in seven concentric zones; each of the 377 cities of the region belongs to a single zone. The zones are named with six letters: A B C D E F; the area corresponding to the city of Rome includes two zones.
Thus, it is possible to travel with a single ticket :
- on a number of public transport services (buses and trams of the city of Rome and of Lazio Region, underground, trains)
- on a number of different routes
- within a single zone
- within the territory of different zones, excluding special links.
The integrated ticket fare varies according to the length of the route and to the number of zones you are travelling within. Different formulas Travel Cards can be purchased, that allow passengers to travel within up to seven zones. The maximum cost of a Travel Card corresponds to six zones. The maximum number of zones a Metrebus Lazio passenger is allowed to travel within is shown with a number printed on the card.

Tickets: types and prices

BIT - Integrated Time Ticket.
Price: 0.77 €.
It is valid for up to 75 minutes after commencement of your journey
Where to buy it:
- automatic ticket machines
- authorised vendors
- ATAC counters and kiosks
Where to use it:
- on all ATAC buses
- on all COTRAL buses
- for 1 trip on all underground lines (A and B). The ticket is also valid for one trip in both lines, provided that you haven’t passed the metro station exit barriers
- on the urban train lines (Met.Ro): Roma – Lido, Roma - Pantano, Roma – Viterbo (only as far as Roma Sacrofano Stazione)
- for a single trip on any metro-type FS train (2nd class).
Validating your ticket:
BIT tickets must be validated on commencement of your journey and when you enter a metro station. If you are still travelling when your ticket is expired (after 75 minutes from the first validation), the ticket must be stamped again, and it is valid until the end of your journey. Validation machines are located at the rear of buses and trams, at the entry gates of Metro stations and within the entrance area of all rail stations, as well as on the urban trains Roma–Pantano and Roma–Viterbo.
Passengers obligations:
As long as passengers are travelling or are still inside a metro station or a railway station, they must keep their ticket and show it to ticket inspectors.
NB: Some ticket machines on the B Line metro stations provide different size tickets; given the odd dimensions, these tickets have to be stamped in special machines located only in the B Line metro stations.

BIG - Integrated Daily Ticket.
It is valid for use on all public transport services on the day when it is validated, allowing an unlimited number of rides on buses, tramways, subways and urban trains.
Price: 3.10 €
Where to buy it:
- automatic ticket machines
- authorised vendors
- ATAC counters and kiosks
Where to use it:
- on all ATAC buses
- on all COTRAL buses
- on all underground lines (A and B).
- on the urban train lines (Met.Ro): Roma – Lido, Roma - Pantano, Roma – Viterbo (only as far as Roma Sacrofano Stazione)
- on any metro-type FS train (2nd class).
Validating your ticket:
BIG tickets must be validated on commencement of your journey. Validation machines are located at the rear of buses and trams, at the entry gates of Metro stations and within the entrance area of all rail stations, as well as on the urban trains Roma–Pantano and Roma–Viterbo.
NB: Some ticket machines on the B Line metro stations provide different size BIG tickets; given the odd dimensions, these tickets have to be stamped in special machines located only in the B Line metro stations.

CIS - Integrated Weekly Ticket.
It is valid for use on all public transport services for seven days, allowing an unlimited number of rides on buses, tramways, subways and urban trains.
Price: 12.40 €.
Where to buy it:
- some automatic ticket machines
- authorised vendors
- ATAC counters and kiosks
Where to use it:
- on all ATAC buses
- on all COTRAL buses
- on the urban train lines (Met.Ro): Roma – Lido, Roma - Pantano, Roma – Viterbo (only as far as Roma Sacrofano Stazione)
- on all underground lines (A and B).
- on any metro-type FS train (2nd class).
The ticket must be shown to ticket inspectors.
NB: a CIS ticket is a personal card, and passengers have to fill it in with their personal details and the validity period.