ATAC S.p.A.

ATAC, also known as Azienda Tramvie e Autobus del Comune di Roma and ATAC S.p.A., is the public transport operator responsible for delivering urban mobility services in Rome, Italy. Its core mandate comprises the operation of bus, tram and metro lines that form the backbone of the city’s transit system. The organisation manages an integrated ticketing platform that allows passengers to transfer between modes using a single fare. In addition to regular scheduled services, ATAC runs specialised routes such as night buses, school shuttles and event‑specific transport. It is tasked with the maintenance and renewal of infrastructure, including tracks, stations, depots and rolling stock. Customer service functions, including information centres, online assistance and mobile applications, fall under its responsibility. ATAC also oversees accessibility measures, ensuring that vehicles and facilities meet standards for passengers with reduced mobility. The company participates in urban planning processes, offering expertise on route design and service frequency to meet demand. Its operations are guided by the public service obligations set by the municipal authority of Rome.

ATAC S.p.A. is a municipal enterprise wholly owned by the Commune of Rome (Roma Capitale), with its headquarters situated in Italy. As the primary public transport operator entrusted by the city council, it holds a regulatory role in defining service quality standards and coordinating with regional transport bodies. The organisation’s distinguishing attribute is the integration of multiple transport modes under a unified fare structure, facilitating seamless travel across the city. It maintains operational continuity even during disruptions, as evidenced by the March 2023 cyber incident that affected online ticketing while bus, tram and metro services continued to run. The incident response involved technical teams restoring digital platforms and monitoring service stability without compromising physical transportation safety. ATAC’s workforce includes drivers, maintenance personnel, administrative staff and specialists who support the day‑to‑day functioning of the network. The organisation collaborates with other public agencies on mobility planning and service improvements. Financial oversight and strategic direction are provided by the municipal shareholder through appointed boards and supervisory committees. ATAC functions as the principal public transport provider for Rome, delivering essential mobility services to residents, commuters and visitors under public ownership.