Currently all the København commuter trains, the so called S-tog, are of one and the same type. The fourth generation of S-tog trains are of the class SA (8 coaches) or its shortened variant class SE (4 coaches). They are wider than normal trains, but their coaches are very short. There are only individual axles instead of full bogies placed under the junctions of coaches. All these features make these trains quite special, but also well suited for large numbers of passengers quickly moving in and out. The first ones of these trains were built by Alstom and Siemens in 1996 in Germany, after which Adtranz and Bombardier built more of them in Randers, Denmark 1999-2006. Picture of a class SA train at Køge station 11.7.2013 by Ilkka Siissalo.

FUNET railway pictures archive - Denmark - S-tog commuter trains of Copenhagen

stog1gen.jpg S-train of the 1st generation restored and run by a volunteer group of staff. Photo in Charlottenlund 05 april 1996 by Erik Hjelme (8k) Uploaded May 20 1996

A first generation København S-tog from the year 1933, built by Frichs in Århus, is nowadays kept at the national railway museum of Denmark in Odense. Picture 10.7.2016 by Ilkka Siissalo.

A detail of the same train as above. Driving these trains in the 1930s was still done while standing and was quite a different job from what it is today. Photo at national railways museum of Denmark in Odense 10.7.2016 by Ilkka Siissalo.

stog2gen.jpg S-train of the 2nd generation built from 1967. Photo in Høje Taastrup 19 march 1996 by Erik Hjelme. (7k) Uploaded May 20 1996

Some of the second generation S-tog trains were still in use in 2004 when Sanna Siissalo took this picture at København central station 20.4.2004. There was at a certain time quite a scandal, as it was found out that these trains contained asbestos in such a manner that passengers and personnel could have been for years inhaling asbestos particles.

stog4gen.jpg This picture was taken in 1996 as the S-trains of the new 4th generation had not yet even entered service. Two units were used for tests and driver training. The car body is very wide indeed, and some work had to be done to the infrastructure to accommodate the extra width. Photo in Høje Taastrup 19 March 1996 by Erik Hjelme. (7k) Uploaded May 20 1996

stog4xle.jpg S-trains of the new 4th generation run on single axle bogies controlled by hydralic cylinders. In normal service the mechanism is covered by panels. Photo in Høje Taastrup 19 March 1996 by Erik Hjelme.

A bit better picture of the 4th generation S-tog train. Picture in Køge 11.7.2011 by Ilkka Siissalo.

stoghtaa.jpg The main depot and workshops of the S-trains in Høje Taastrup in March 1996. Photo in Høje Taastrup 19 March 1996 by Erik Hjelme.

Already well before the time of the S-togs, commuter traffic around København was crowded. DSB built a large number, up to 60 coaches, of these doubledeckers until 1901. They were not at all popular as they were small and crowded and as the technology of the time made them to swing from side to side like ships in high seas in a nasty manner. They soon got a nickname "Bismarck", referring to the famous German chancellor and arch enemy of Denmark. Picture at the Danish national railway museum in Odense 10.7.2016 by Ilkka Siissalo.

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