-- Line 3 , currently known as Zona Universitària - Trinitat Nova , coloured green and often simply referred to as `` Línia verda '' ( `` Green line '' ) , is a metro line in Barcelona operated by TMB , and therefore part of the fare-integrated ATM transport network of the urban region .
Line 3 , ( L3 ) currently known as Zona Universitària - Trinitat Nova , coloured green and often simply referred to as `` Línia verda '' ( `` Green line '' ) , is a metro line in Barcelona operated by TMB .