in the future. The Sheppard line tracks cross above the Yonge line. Line 4 has side platforms (unique among TTC terminal stations), but there is also a roughed-in centre platform. Should the station become a busy transfer point, this platform will be opened and trains will open all their doors, allowing riders
to enter on one side and exit on the other to improve efficiency. Both lines have a
crossover just beyond the platforms, with Line 1's being to the south and Line 4's to the east. As Sheppard-Yonge is a terminus for Line 4, its crossover is used to regularly reverse trains, with Line 1's being used only for occasional
short turns. Trains normally pull into the south platform on Line 4 to allow passengers to board and alight before returning in the direction from which they came; the north platform is used only for passengers disembarking from trains that are going out of service. A connecting track from the southbound Line 1 track south of the station, used only if non-revenue trains or work cars need to be transferred between the two lines, curves around to a point west of Yonge on Line 4's single
tail track, slightly more than one train-length east of the end of the track, with a second (which becomes the eastbound track) diverging from the connector, which passes under it. This provides an area where trains can be stored clear of the line. East of the station, Line 4 converges with a second connecting track from northbound Line 1. ==Surface connections==