Roma - Civita Castellana - Viterbo line (Roma Nord) Opened in 1932 in place of an old suburban tram line. 101 Km. Urban service Roma — Montebello and interurban services Roma — Civita Castellana — Viterbo. From 1976 to 1993 under A.Co.Tra.L, from 1993 to 2000 under Co.Tra.L, from 2000 to 2010 under Met.Ro. and from 2010 to 2022 under ATAC. From 2022 the service is run by COTRAL.