S41/42 (Berlin)

{{Infobox rail line

| box_width =

| name = {{rail-interchange|berlin|S41|size=30}} {{rail-interchange|berlin|S42|size=30}}

| other_name = Ringbahn

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| image = Karte berlin ringbahn.png

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| system = Berlin S-Bahn

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| locale = Berlin

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| operator = S-Bahn Berlin GmbH

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| stock = DBAG Class 481
DBAG Class 483
DBAG Class 484

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| electrification = 750 V DC Third rail

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| map = {{S41/S42 (Berlin S-Bahn)}}

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| map_state = uncollapsed

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S41 and S42 operate a circular service on the Ringbahn and are part of the Berlin S-Bahn. The S41 operates clockwise around the circle, the S42 operates counter-clockwise.{{Cite web| title = S-Bahn Network Map | publisher = S-Bahn Berlin GmbH | date = 2008-06-27 | url = http://www.s-bahn-berlin.de/pdf/s_bahn_netz.pdf | accessdate = 2009-07-07}}