Stuttgart Marienplatz Zahnradbahn This is the Zahnradbahn (cog rail) train to Degerloch, where it intersects with U5, U6 and U7. Marienplatz has a separate platform from the U-Bahn underground for U1 and U14 using DT8-10 cars. On the Zahnradbahn, there is a bicycle rack for those not wanting to walk their bicycles uphill. Taken 2 August 1997. (C) 1997, 2005 Josh Hanz (josh_hanz@hotmail.com)