(Italy )ROME-C

Images kindly supplied by Roma Metropolitane - Foto Romolo Ottaviani Studio di Architettura. (Thanks)
Graniti depot	Malatesta TBM lowering well	Gardenie stop
P.zza S. Felice TBM extracting well

Rome
Rome current metro network is articulated in 2 lines (A, B) with a common stop in Roma Termini.
Line B (opened in 1955) runs along Laurentina-Roma Termini-Rebibbia track; after the opening of the first stretch, Line B (currently 19 km long) was extended in 2012 from Bologna to Conca d'Oro (the so called "Line B1" intermediate branch about 3.9 km long, to be extended towards P.zale Jonio in the next future).
Line A was opened in 1980, connecting Battistini to Anagnina and passing through Roma Termini (where it interchanges with Line B). Although works begun in 1964, the first stertch has been completed oly in 1980 because of many technical and archaeological problems (initially it was chosen the "cut&cover" technique, but years later works were completed with bored tunnel method). In 1999 Line A reached the current length of 18 km thanks to Ottaviano-Battistini western extension.
A third line (Line C, 25 km) is under construction, connecting Clodio Mazzini (north-west) to Pantano (east). Line C (driverless) will run underground crossing Prati, the very central area of P.za Venezia, Colosseo and S. Giovanni, Pigneto, Centocelle, Alessandrino, Grande Raccordo Anulare; from this point it will run ground level up to Pantano terminal. Some of the stops will have a crucial role in the interchange with Line A (Ottaviano, S. Giovanni), Line B (Colosseo) and suburban railway FR1 to Fiumicino Airport (Pigneto).
The whole system will be completed by a fourth line (Line D); it will be about 20 km long running mostly north-south from Talenti (Ojetti terminal) to EUR (Agricoltura Terminal), with many interchange stops with the other metro lines (Line A: P.za di Spagna; Line B/B1: EUR Magliana, Jonio; Line C: P.za Venezia) and the suburban railways. The first section to be realized should be Fermi-Salario (11 km)The tender procedure is currently suspended.
Roma Metropolitane (official site)

Country	Italy
Line	Line C
Inhabitants	City 2.800.000, District 3.600.000
Date opening	2013
Future development:	possible extensions Clodio Mazzini-Farnesina, Teano-Ponte Mammolo
Length (km)	25.5
Track sections	17.6 km underground (double single track gallery), 7.9 km ground level (segregated track)
Stops	30, average distance m 900
Platforms	--
Platform doors	yes
General characteristics	length m 100, width m 4
n. of vehicles	30
n. of cars per vehicle	6
Type	--
Vehicle dimensions (m)	length -- width --
Vehicle capacity (pax)	--
Frequency	3/12 min
Current/Voltage	--
Type of guide/gauge	--
Speed Km/h	Comm. 35, Max 80
Accel./Decel. (m/sec2)	1.3/1.3
System capacity	24.000 pphpd
Ridership	--
Total cost	120 M Euro/km
Staff	--
System builder	ANSALDO
Model	--
Note	construction phases: Pantano-San Giovanni (2013); San Giovanni-Colosseo (2016); Colosseo-Clodio Mazzini(2018)