Portal:Trains/Featured article/Week 7, 2006
Szybka Kolej Miejska (SKM; Polish: Urban Fast Train) is a transportation service that originally functioned in Poland's Tricity area (Gdańsk, Sopot and Gdynia). The system has grown from its creation to cover a longer route, reaching towns like Elbląg, Wejherowo and Lębork. It is serviced by electric multiple unit cars at a frequency of 3 minutes to half an hour (depending on the time of day) between trains. It is an essential service for the cities and is often compared to subway service in other European cities. The Tricity area is uniquely suited for this mode of transport, as it's shaped in a a relatively narrow north-south corridor between the Gdańsk Bay and the Trójmiejski Park Krajobrazowy.