Alstom Konstal is a company based in Chorzów, Poland producing rail vehicles, in particular metro cars and trams, as well as components for trains.

The Warsaw tram network is a 125.3-kilometer (77.9 mi) tram system serving a third of Warsaw, Poland, and serving half the city's population. It operates 726 cars, and is the second-largest system in the country. There are about 25 regular lines, forming a part of the city's integrated public transport system organized by the Warsaw Transport Authority. Since 1994 the system is operated by the municipally-owned company Tramwaje Warszawskie sp. z.o.o.