Prof. Dr. Michael Piazolo, a Bavarian state parliament representative, prepared the study for a potential Münchner Ringbahn. The proposal of building the circular railway similar to Berlin Ringbahn has recently gained more traction with city government and state parliament. The circular railway would use the Munich North Ring, the S8 line between Johanneskirchen and Ostbahnhof, the Südring between Ostbahnhof and Heimeranplatz, and a new line, to be built between Heimeranplatz and Olympiakreuz. The close proximity of Nymphenburg Palace and the west–east lines at Donnersbergerbrücke station would require the construction of tunnels between south of Heimeranplatz and Olympiakreuz.