Milan Metro Line 1

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Milano linea M1.svg
Milano - M1 Rho Fiera.jpg
LocaleMilan, Italy
TypeRapid transit
SystemMilan Metro
Operator(s)Azienda Trasporti Milanesi
Depot(s)Gallaratese, Precotto
Rolling stock63 trains:[2]
UdT (various series)
AnsaldoBreda Meneghino
AnsaldoBreda Leonardo [it]
Daily ridership500,000[3]
Opened1 November 1964 (1964-11-01)
Line length27 km (17 mi)[1]
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification750 V DC fourth rail or overhead catenary (overground depots only)
Route map
Milano mappa M1 2005-12-19.svg

Line 1 (Linea Uno in Italian) is the first underground rapid transit line built in Milan, Italy. It is part of the Milan Metro and it is operated by ATM. Works on the line began in 1957, and the first part was opened on 1 November 1964,[4][5] running from Sesto Marelli to Lotto station. The line is also called Red Line (Linea Rossa in Italian), as it is visually identified by red signs. Due to its premiership, the line gave its red color to the Milan Metro logo.


The line runs underground from the northern suburb of Sesto San Giovanni to the city centre, then to the western district with two different branches, one northwest to Rho, the other to the west to Bisceglie. It is 27 km (17 mi) long and serves 38 underground stations.[6]

Key points served by the line are Duomo, considered the center of Milan; Castello Sforzesco (with Cairoli station); Cadorna, one of the busiest stations in Milan and in Italy; Corso Buenos Aires (with stations Porta Venezia, Lima and Loreto), an important shopping street; and Rho Fiera, one of the largest fairgrounds in the world.[7]

Station Name Transfer Branch Opening
Sesto I Maggio Milano S7.svg Milano S8.svg Milano S9.svg Milano S11.svg Tren.svg Main route 28 September 1986
Sesto Rondò
Sesto Marelli 1 November 1964
Villa San Giovanni
Loreto Milano linea M2.svg
Porta Venezia Milano S1.svg Milano S2.svg Milano S5.svg Milano S6.svg Milano S13.svg
San Babila Milano linea M4.svg (30 June 2023)
Duomo Milano linea M3.svg
Cadorna Milano linea M2.svg

Milano S3.svg Milano S4.svg Tren.svg

Buonarroti Rho Fieramilano branch 1 November 1964
Lotto Milano linea M5.svg
QT8 8 November 1975
Lampugnano 12 April 1980
San Leonardo
Molino Dorino 28 September 1986
Pero 19 December 2005
Rho Fieramilano Milano S5.svg Milano S6.svg Milano S11.svg Tren.svg
Wagner Bisceglie branch 2 April 1966
De Angeli
Bande Nere 18 April 1975
Bisceglie 21 March 1992


The mezzanine floor of the Amendola station just before opening in 1964.
The San Babila station's poster during the 1960s.

On 6 April 1952 the city administration asked for a project of a metro system and on 6 October 1955 a new company, Metropolitana Milanese, was created to manage the construction of the new infrastructure.[8] The project was funded with 500 million from the municipality and the rest from a loan. The construction site of the first line was opened in viale Monte Rosa on 4 May 1957.[8] Stations on the new line were designed by Franco Albini-Franca Helg architecture studio. Bob Noorda designed the famous wayfinding and signage system.[8]

At first, stations were designed without the mezzanine floor. However, these were added to the final design to allow street crossing and the use of gates to collect tickets.

The line from Lotto to Sesto Marelli (21 stations) opened on 1 November 1964, after seven years of construction works.[9]

Rolling stock[edit]

There are 4 types of trains running on the line: the original first series trains, revamped original trains, AnsaldoBreda Meneghino trains and the new Leonardo [it] train introduced in 2015. The track gauge is the 1,435 mm (4 ft 8+12 in) standard gauge. The entire line is electrified by means of a third or fourth rail at 750 V DC.[10]

Among the 63 trains running on the line, 20 entered service between 1964 (opening of the line) and 1970. Those trains are planned to be replaced by new Meneghino trains in the next few years. There are 17 Meneghino trains already operational as of March 2012.[2]


An extension towards the north from Sesto Primo Maggio to Cinisello/Bettola is currently under construction. It is expected to be completed by 2023.[11] The new section will be 1.9 km (1.2 mi) long with 2 stations (Sesto Restellone and Cinisello/Bettola), entirely underground. The total cost will be €206 million.[12]

Station Name Transfer Grade
Sesto Restellone Underground
Cinisello/Bettola Milano linea M5.svg Underground

An extension of the western branch from Bisceglie towards the city limits has been approved. The new stations will be located at Baggio, via Valsesia and at Quartiere Olmi. The national government will provide €210 million, while the total cost is estimated at €350 million.[13]

Station Name Transfer Grade
Valesia Underground
Baggio Underground
Quartiere Olmi Underground



  1. ^ a b "Metropolitana Milanese - Milano M1". Archived from the original on 2013-10-19. Retrieved 2013-07-20.
  2. ^ a b "Metrò rossa a rischio paralisi da cambiare un terzo dei treni". la Repubblica. 8 March 2012. Archived from the original on 11 March 2012. Retrieved 9 March 2012.
  3. ^ "1964-2014, Milano festeggia 50 anni della linea 1 del metrò: "Così siamo diventati europei"". la Repubblica. 1 November 2014. Retrieved 4 November 2014.
  4. ^ "ATM - Storia". Azienda Trasporti Milanesi. Retrieved 5 October 2011.
  5. ^ "Carta della mobilità 2011" (PDF). Azienda Trasporti Milanesi. Archived from the original (PDF) on 29 March 2012. Retrieved 5 October 2011.
  6. ^ "Linea M1 di Milano: il nuovo segnalamento entra in attività durante il ponte del 1°novembre". I binari - CityRailways. 31 October 2011. Archived from the original on 3 April 2012. Retrieved 3 November 2011.
  7. ^ "About us". FieraMilano. Archived from the original on 22 July 2011. Retrieved 19 October 2011.
  8. ^ a b c "La storia della linea 1". Metropolitana Milanese Spa. Retrieved 31 October 2011.
  9. ^ Milan Opens Its First Metro International Railway Journal February 1965 page 22
  10. ^ "Milan Metro". Retrieved 5 October 2011.
  11. ^ Quattrone, Ilaria (15 January 2021). "Metro M1 fino a Monza, si sblocca il cantiere: ripartono i lavori a Sesto San Giovanni" (in Italian). Retrieved 6 April 2021.
  12. ^ Stella, Armando (14 March 2011). "Metrò per Monza, ad aprile primi cantieri". Corriere della Sera. Archived from the original on 21 June 2011. Retrieved 5 October 2011.
  13. ^ Dazzi, Zita (5 November 2019). "Arrivano i fondi per il prolungamento della M1 a Baggio: il governo stanzia 210 milioni". Repubblica. Retrieved 19 December 2019.