Milan Metro Line 3

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Milano linea M3.svg
Milano metropolitana Lodi TIBB.JPG
Lodi T.I.B.B. station
Line number3
LocaleMilan, Italy
TypeRapid transit
SystemMilan Metro
Operator(s)Azienda Trasporti Milanesi
Depot(s)Rogoredo Depot
Rolling stockUdT series 8000/8100
AnsaldoBreda Meneghino
Daily ridership250,000 (2012)[1]
Opened3 May 1990
Line length17.1 km (10.6 mi)
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification1,500 V DC overhead catenary
Route map
Milano mappa M3 2011-03-26.svg

Line 3 (Linea Tre in Italian, also known as M3) is a subway line serving Milan, Italy. The line is part of the Milan Metro and is operated by ATM. Construction began in 1981 in order to be ready for the 1990 Football World Cup. It is also called the Yellow Line (Linea Gialla) as it is identified by yellow signage.

The line connects the south-eastern suburb of San Donato Milanese to the north-western area of the city passing through the city centre. It is 17.1 km long with 21 stations.


Inside an original line M3 train.

The proposal for a third metro line was approved by Milan municipality in 1977. The route was chosen based on a study of main traffic routes in previous years. The final project was presented in early 1981 and works on the new line began on 8 September of the same year.[2] The first section, from Centrale to Duomo was opened on 3 May 1990, just before the beginning of the World Cup. However, only a shuttle service was active between the two terminus. The line was extended to Porta Romana at the end of the year.[3]

New extensions to Sondrio on the north and to San Donato on the south opened on 12 May 1991.[4]

Works on the new line slowed during the following years. Zara station was inaugurated only on 16 December 1995 and Maciachini on 8 December 2003.[4] The last extension (Maciachini-Comasina) opened in early 2011.[5]


The line, 16.6-kilometre long with 21 stations, runs from Comasina to San Donato, entirely underground

Station Name Transfer Opening
Comasina 26 March 2011
Affori FN Milano S2.svg Milano S4.svg Tren.svg
Affori Centro
Maciachini 8 December 2003
Zara Milano linea M5.svg 16 December 1995
Sondrio 12 May 1991
Centrale FS Milano linea M2.svg Tren.svg 3 May 1990
Repubblica Milano S1.svg Milano S2.svg Milano S5.svg Milano S6.svg Milano S13.svg
Duomo Milano linea M1.svg
Missori Milano linea M4.svg (Sforza-Policlinico) (October 2024) 16 December 1990
Crocetta 6 December 1990
Porta Romana
Lodi T.I.B.B. Milano S9.svg 12 May 1991
Porto di Mare
Rogoredo FS Milano S1.svg Milano S2.svg Milano S13.svg Tren.svg
San Donato

Rolling stock[edit]

Trains use an overhead contact system providing a voltage of 1,500 V DC. The track gauge is the 1,435 mm (4 ft 8+12 in) standard gauge.

As of 2020, there are two types of trains running on the line:

The 8000 Series, built between 1989 and 2003 and the 900 Series "Meneghino", introduced in 2011 for the line's extension to Comasina.

The 8000 Series has three subseries:

- "standard" 8000 Series, built by a consortium of Breda, Fiat Ferroviaria and OMS, with GTOVVVF inverters made by ABB.

- 8080 Series, built by Socimi, with GTO–VVVF inverters made by Hitachi.

- 8100 Series, air-conditioned, walk-through version of the older 8000s introduced in 2003 for the line's extension to Machiachini.

Planned extension[edit]

A south extension of the line is planned. The new section will run from San Donato through the municipalities of San Donato Milanese, Peschiera Borromeo, Mediglia, Pantigliate, Settala and Paullo. The extension will be 14.8 km (9.2 mi) long with 6 stations and will be mostly underground (60%).[6]

Although the project was approved in 2010, it was put on hold at the beginning of 2011 due to lack of funds.[7] Works were planned to start in a future year.[8]

Notes and references[edit]

  1. ^ "Area C rilancia i mezzi pubblici è boom di passeggeri sul metrò". la Repubblica. 19 September 2012. Archived from the original on 22 September 2012. Retrieved 28 October 2012.
  2. ^ Severi, Vasini (1989). Metropolitana di Milano. Milano: Azienda Trasporti Municipali.
  3. ^ "Milano sperimenta il suo terzo metrò". Corriere della Sera. 1 May 1990.
  4. ^ a b "La cronistoria della Metropolitana di Milano". CityRailways. Archived from the original on 20 March 2012. Retrieved 23 September 2011.
  5. ^ "Nuove fermate linea 3". Corriere della Sera. Archived from the original on 21 June 2011. Retrieved 23 September 2011.
  6. ^ "Prolungamento linee Metropolitane e Nodo Interscambio Fiera: Metropolitana linea 3". Comune di Milano. Retrieved 1 October 2011.
  7. ^ "Metrò choc, bloccato il prolungamento fino a Paullo". Il Giorno. Archived from the original on 30 March 2012. Retrieved 1 October 2011.
  8. ^ "Prolungamenti". Metropolitana Milanese. Archived from the original on 26 October 2011. Retrieved 1 November 2011.

External links[edit]