ACOTRAL, COTRAL and Met.Ro.
ACOTRAL (Azienda Consortile TRAsporti Laziali – “Lazio Transportation Consortium Agency”) was formed in 1976 with the restructuration of the STEFER company and the merge of several suburban and interurban bus companies. In 1993, it was restructured as COTRAL, now becoming a pubblicly-owned, regionally-managed consortium, and in 2000, it was split into two separate companies: Li.La (Linee Laziali – “Lazio Lines”, later re-named back to COTRAL) the interurban bus operator, and MetroFerro (later renamed Met.Ro.), the “heavy rail” operator responsible for subways and regional railways. In 2010, both companies were restructured again, with Met.Ro. and the urban busses and tramways section of COTRAL being merged into the ATAC company.