Editing Tricity, Poland (section)

==== Tricity Rapid Transit Rail ====
The Tricity area is served by the [[Szybka Kolej Miejska (Tricity)|SKM]] rail network (known in Polish as ''Szybka Kolej Miejska w Trójmieście'' or "Tricity Rapid Transit Rail"). It currently provides regular service primarily on two dedicated railways complemented by some of the ordinary railways in the region, both as a commuter rail connecting some of the peripheral towns and villages with each other and with the principal cities of Gdańsk, Gdynia and Sopot, as well as internal rapid transit service within the urban core formed by the three cities. The intervals range from every 6 minutes during peak time on the main common section between Gdańsk and Gdynia to 30 minutes at the farthest ends.

[[File:SA136-019, Gdańsk Brętowo, 2015-09-25 (Muri WG 2015-34).jpg|thumb| [[Szybka Kolej Miejska (Tricity)|Rapid Transit Rail]] (the Pomeranian Metropolitan Railway line)]]
The rapid transit rail network has achieved since its inception in 1951 a unifying effect on the metro area formerly divided by a frontier, by linking the connected localities with a frequent and reliable service. More recently, a pre-war railway destroyed in 1945 by the retreating German army has been reconstructed as the 19.5 km ''Pomorska Kolej Metropolitalna'' (Pomeranian Metropolitan Railway) or ''PKM'' line, also been operated by the SKM, and put into service in 2015, providing connection of the downtown station of [[Gdańsk Wrzeszcz railway station|Gdańsk Wrzeszcz Station]] with the [[Gdańsk Lech Wałęsa Airport]], with further service to the [[Gdynia Główna]] Station provided via an earlier existing railway, thus forming a loop connected to the primary SKM line directly at its southern terminus, while the northern terminus is connected indirectly through an earlier existing line. The primary SKM line has been served by overhead-powered [[electrical multiple unit]]s since its inauguration, while the PKM line is currently serviced by oil-powered units, though it is scheduled for imminent electrification.