 The two northernmost platforms of the station, platforms 1 and 2, are used by commuter rail trains, and connect to the tunnel going north.The two southern platforms (3 and 4) are used by long-distance passenger trains and passing freight trains.When the long-distance rail connection between Stockholm South and Stockholm Central stations is interrupted (as for rail maintenance works during the summers of 2018 to 2020), Stockholm South becomes the terminus for long-distance trains between Stockholm and locations further south and east, with passengers able to continue the journey through commuter trains through the City Line.