of the Miquelknotens. Thereafter, the route runs above ground in the middle of the Rosa-Luxemburg-Straße to the station Europaturm. North of Wilhelm-Epstein-Straße, the Rosa-Luxemburg-Straße has to be demolished and re-routed. It should run in this area at ground level and would have only two lanes, between which the Stadtbahntrasse via the new station Platenstraße to the station Ginnheim, where it connects to the existing route. For the variant Europe Tower is calculated with 12,470 additional passengers daily and construction costs of up to 174 million euros. Both variants allow for the relocation of about 15,000 passengers daily from the Line A and 4,600 from the S-Bahn south of the station Ginnheim on the new subway line. In addition, in the variant "Ginnheimer curve" about 3000 and in the variant "Europaturm" about 5000 passengers from the tram line 16 to the subway change. Southern Extension Hauptbahnhof - Niederrad (D II) The stretch to Niederrad, connects to the already built in 1978 tunnel stubs station Central Station, which currently extend approximately to the southern edge of the station forecourt. From here, the projected tunnel follows in a straight line the Wiesenhüttenstraße to the Main. Under the river, a curve connects to the west, about at the southern end of the Peace Bridge he reaches the other bank of the Main. Below the Theodor Stern quay, the first and only Südmainische tunnel station of the D route is to be created. From here, the route follows the Main river in a straight line and reaches the existing tram line via a ramp in the area of the university hospital. Until today's Heinrich-Hoffmann-Straße / Blutspendedienst station, the tram line, inaugurated in 1959, is already transposed independent of the road. On the other hand, more extensive expansion measures are required in the further course of the Deutschordenstraße, where the tram to this day shares the infrastructure with the rest of the road. The running through the Bruchfeldstraße tram route to Haardtwaldplatz should be set due to the low frequency and replaced by a bus line. In the Triftstraße area, the line splits into two branches, which largely correspond to the existing tram routes to the stadium and to Schwanheim. Niederrad - Schwanheim The second part from Niederrad to Schwanheim was dismantled in 1975. The track has since been used for tram traffic and has its own track body in the middle of the road on