S-train

The S-train (Danish: S-tog) network is a combined urban rapid transit and suburban rail network serving Metropolitan Copenhagen, Denmark. It connects the city center with the inner suburbs of Copenhagen. The first line was opened in 1934. Today the network forms the heart of the public transport infrastructure in the city, serving more than 357,000 passengers a day. It is entirely owned and run by DSB S-tog A/S. Along with the S-bahns in Berlin, Vienna and Hamburg, the S-train system in Copenhagen is a metro system unlike many other S-bahns.