San Cesareo
Works were started in 1913 by the "Società per le Ferrovie Vicinali" (SFV), and the first section of the railway was opened for service on 12 June 1916, from Rome to San Cesareo and Genazzano, together with a branch line from San Cesareo to Frascati. The railway used a narrow gauge of , with electric traction and high-voltage direct current (850 V). In Rome, an SFV Station was constructed besides Roma Termini station, on the Esquiline Hill side.