The Warsaw Tram (Polish: Tramwaje Warszawskie) has a network of about 120 km, operated by Tramwaje Warszawskie Sp. z.o.o. There are also two Metro lines (Underground) with a total length of approx. 30 kilometres. The Metro is operated by Metro Warszawskie Sp. z.o.o. As there is a linked transport system (→ ZTM), the tickets are valid on all means of public transport.
Wrocław is located in Lower Silesia in the western part of Poland and has a population of 600,000. The city has a widely ramified, standard-gauged tram network with a system length of approx. 85 Kilometres. It is operated by MPK Wrocław ("Miejskie Przedsiębiorstwo Komunikacyjne Sp. Z o.o. we Wrocławiu").
The tramway in Krakow (Poland) runs on a network with a system length of more than 90 kilometres. In addition to numerous new low-floor vehicles, there are also many used tramcars taken from Vienna, Düsseldorf and Nuremberg. The tram is operated by → MPK Kraków (Miejskie Przedsiębiorstwo Komunikacyjne S.A. w Krakowie).
Katowice, Silesian Interurbans
The tram network in the Upper Silesia metropolitan area around Katowice is one of the largest in Europe, it has a system length of more than 200 kilometres. Seven large cities with more than 100,000 inhabitants and several small towns with a total population of almost two million are covered by the system. The mix of urban sections and the interurban sections makes the special charm of this tram. Unfortunately, many routes are in a very bad condition, so the future of some lines is very questionable. The entire network is operated by → Tramwaje Śląskie S.A.
With a population of 700,000, Lodz is the third largest city in Poland after Warsaw and Krakow. It has a large tram network with a system length of more than 140 kilometres and a track gauge of 1,000 millimetres (metre-gauge). The tram as well as city buses are operated by the municipal transport company → MPK-Łódź (Miejskie Przedsiębiorstwo Komunikacyjne).
The city of Bydgoszcz is located in the northeastern part of Poland in the Kujawsko-Pomorskie voivodeship and has a population of more than 350,000. It has a tram network with a track length of approx. 40 kilometres and a track gauge of 1,000 millimetres (metre gauge). The trams as well as the city buses are operated by → MZK Bydgoszcz (Miejskie Zakłady Komunikacyjne w Bydgoszczy).
The city of Toruń is located in the western part of Poland in the Kujawsko-Pomorskie Voivodship and has about 200,000 inhabitants. It has a metre-gauge tram network with a system length of some 20 kilometres. The tram as well as the city buses are operated by → MZK Toruń (Miejski Zakład Komunikacji w Toruniu sp. z.o.o.)
The city of Olsztyn is located in Northeast Poland and has about 175,000 inhabitants. It has a tram network, which was abandoned in 1965 and reopened at the end of 2015. The new one covers only in front of the station and a small section in the inner city with the former network. While the old network had metre-gauge tracks, the new tram used standard-gauge tracks (1,435 mm). The routes are arranged in a T-shape and have a length of approx. 10 kilometres. The trams as well as the city buses are operated by MPK Olsztyn (Miejskie Przedsiębiorstwo Komunikacyjne Sp. z.o.o.).
The city of Elbląg is located in northern Poland and has about 120,000 inhabitants. It has a small but fine tram network with a total distance of approx. 16 kilometres. The trams run on metre-gauge tracks. The trams as well as the city buses are operated by → ZKM Elbląg (Zakład Komunikacji Miejskiej w Elblągu).
The city of Grudziądz has about 100,000 inhabitants and is located in the northern part of Poland, about 100 kilometres south of Gdansk in the Kujawsko-Pomorskie voivodship. It has a 7.6-kilometre-long, metre-gauge tram line. There is also a 1.4 kilometre branch line to the railway station, which is served only a few times a day by trams running from and to the depot. The operator is → MZK Grudziądz (Miejski Zakład Komunikacji Sp. z o.o. w Grudziądzu).
Częstochowa, situated in the southern part of Poland, is the second largest city in Silesia after Katowice with a population of 200,000 inhabitants. It has a Y-shaped, almost 15-kilometre-long tram network, which is operated by → MPK Częstochowa (Miejskie Przedsiębiorstwo Komunikacyjne w Częstochowie Sp. z o.o.).
The city of Gorzów Wielkopolski (German: Landsberg an der Warthe) has some 120,000 inhabitants and is located in western Poland about 40 kilometres away from the German-Polish border near Kostrzyn. It has a Y-shaped tram network with a route length of approx. 13 kilometres. The local transport company is called → MZK Gorzów (Miejski Zakład Komunikacji w Gorzowie Wielkopolskim Sp.z.o.o.).