The M4 line is the planned fourth line of the

Warsaw Metro The Warsaw Metro () is a rapid transit underground system serving the Poland, Polish capital Warsaw. It currently consists of two lines, the north–south M1 (Warsaw), M1 line which links central Warsaw with its densely populated northern and sou ...

. It will have a length of approximately and will consist of 23 stations, linking

Wilanów Wilanów () is a dzielnica, district of the city of Warsaw, Poland. It is home to historic Wilanów Palace, the "Polish Palace of Versailles, Versailles," and second home to various List of Polish rulers, Polish kings. Wilanów is home to many v ...

with

Tarchomin Tarchomin is a neighborhood of Białołęka district, in northern Warsaw, Poland. History The village of Tarchomin has been known since the Middle Ages. Its name appears in documents as early as the 13th century. It was a noble village, inhabited ...

. It will also include a new metro depot, STP Polfa. The line will be an important element of the metro network and the overall transport system in Warsaw. According to initial findings, it is expected to be used by up to 30,000 people per hour. It will connect the districts of

Białołęka Białołęka (, lit. ''White Meadow'') is one of 18 districts of Warsaw, located in the northern part of the city. Until October 27, 2002 Białołęka was a gmina. According to the Central Statistical Office data, the district's area is and ...

Bielany Bielany () is a district in Warsaw located in the north-western part of the city. Initially a part of Żoliborz, Bielany has been an independent district since 1994. Bielany borders Żoliborz to the south-east, and Bemowo to the south-west. Its ...

Żoliborz Żoliborz () is one of the northern dzielnica, districts of the city of Warsaw. It is located directly to the north of the Warszawa-Śródmieście, City Centre, on the left bank of the Vistula river. It has approximately 50,000 inhabitants and is ...

, Śródmieście,

Wola Wola () is a district in western Warsaw, Poland. An industrial area with traditions reaching back to the early 19th century, it underwent a transformation into a major financial district, featuring various landmarks and some of the tallest offi ...

Ochota Ochota () is a district of Warsaw, Poland, located in the central part of the city's urban agglomeration. It is Warsaw's most densely populated district and home to the scientific campus of the University of Warsaw. The biggest housing estate ...

Włochy Włochy () is one of the districts of Warsaw, located in the south-western part of city. Włochy borders districts Bemowo and Wola from the north, Ochota and Mokotów from the east, and Ursus and Ursynów from the south. It is one of 3 neigh ...

Mokotów Mokotów () is a district of Warsaw, the capital city of Poland. It is densely populated, and hosts many companies and foreign embassies. Only a small part of the district is lightly industrialised (''Służewiec Przemysłowy''), while the majori ...

, and

, as well as enable interchange to M1, M2, M3, and M5 metro lines and the main public transport lines:

trams A tram (also known as a streetcar or trolley in Canada and the United States) is an urban rail transit in which Rolling stock, vehicles, whether individual railcars or multiple-unit trains, run on tramway tracks on urban public streets; some ...

buses A bus (contracted from omnibus, with variants multibus, motorbus, autobus, etc.) is a motor vehicle that carries significantly more passengers than an average car or van, but fewer than the average rail transport. It is most commonly used ...

, and

railways Rail transport (also known as train transport) is a means of transport using wheeled vehicles running in tracks, which usually consist of two parallel steel rails. Rail transport is one of the two primary means of land transport, next to roa ...

. Upon its completion, M4 is planned to be the longest line in the Warsaw Metro system.

History

The line was initially announced in February 2023 by the mayor of Warsaw,

Rafał Trzaskowski Rafał Kazimierz Trzaskowski (born 17 January 1972) is a Polish politician and political scientist specializing in European studies who has served as List of city mayors of Warsaw, Mayor of Warsaw since 22 November 2018. He served as a Member ...

, in the city's plan to construct five metro lines by 2050. On March 14, 2024,

Warsaw City Council Warsaw City Council, officially the Council of the Capital City of Warsaw () is a unicameral governing body of the city of Warsaw, the capital of Poland. The council was first created following the location of Warsaw under the terms of the Magdebu ...

allocated 56 million PLN for pre-design works for the M4 line. On March 19, a tender for the works was issued. In September 2024 the contract for the pre-design works was signed, with the works expected to be finished by 2027. Construction of the M4 line is expected to take place at the same time as the M3 line, starting somewhere in the 2030s.

Stations

The initial station plan for the line was shared on the Warsaw Metro website:

References

{{Warsaw Metro, state=expanded Warsaw Metro lines