side was justified by the layout of the forecourt, which for reasons of space could only have been laid out on the north side. In addition, a possible expansion of the entrance building had to be taken into account. If it had been implemented, this would have been extended to the west and a separate access to the Stadtbahn platforms would have been built. The walls of the ticket hall were clad with light tiles in the lower area. From there, a six metre-wide iron, wood-covered bridge walkway with glass curtain walls led to the entrance to the Ringbahn platform. After the demolition of the entrance building and the signal box, the western corner of the building and part of the western wing of the building still exist. The tasks of the signal box after its decommissioning on 30 April 1993 and control of the WKR and WKS electronic interlockings were taken over by the signalling control centre of the Berlin S-Bahn in Halensee. Tracks and platforms The access from the pedestrian bridge to the Ringbahn platform is via a four metre-wide staircase. The 12.33 metre-wide and 160 metre-long Ringbahn platform is 42.08 above sea level and has a platform height of 96 centimetres. Due to its elevated location, it is equipped with a train shed for weather protection. The hall has a tapered skylight and glazed side walls. It measures 22 metres in width and 161 metres long. The Stadtbahn platforms are each 14.75 metres in width and 163 metres long, the platform height is also 96 centimeters. These platforms are located at a height of 36.08 metres above sea level. They are covered over a length of 40 metres by the iron structure of the Ringbahn train shed and the freight tracks of the Ringbahn, with canopies supported by two lines of columns over the remaining length of each platform. Additional weather protection is provided by a 6.30 metres high embankment on both sides. The stairs between the Stadtbahn and Ringbahn platforms were equipped with escalators from the start. A bypass track runs between the two Stadtbahn platforms. There is a double-track turn-back is to the west of the Stadtbahn platforms and to the east there is a single-track turn-back for terminating services and sets running to the Hundekehle car shed. During the redevelopment of the Stadtbahn and the relocation of Berlin-Charlottenburg station, this track was temporarily adapted