station itself has four tracks, of which the two outer ones are used for passenger traffic and the two inner ones for entry and exit trips to and from the depot. The route continues past the railway stations Langwasser Nord and Messe until the last station of the first subway construction section, Bauernfeindstraße. Between Messe and Bauernfeindstraße the subway passes through the tightest curve in the Nuremberg subway network used in scheduled service. This curve was still designed for a tram line before the decision to build a subway instead was taken, explaining the small curve radius. The maximum speed allowed in this area is 50 km / h. Afterwards, the route dips into a tunnel that was the longest between two underground stations in Nuremberg until the opening of the section Ziegelstein - Airport on the U2, and tunnels under the Südbahnhof area. Shortly after the Brunecker Straße, the track reappears on the surface and runs in a terrain cut to Hasenbuck station. After the Hasenbuck station, the now underground route leads under the eponymous survey and the Katzwanger road to the station Frankenstraße and then runs under the Pillenreuther road to the station Maffeiplatz. The route continues from the Maffeiplatz under the Pillenreuther Straße to the Kopernikusplatz and reaches the station Aufseßplatz. This was prepared during construction on the underpass by another subway line (then called U3) by the tunnel tubes of the U1 are built so that the construction of the track tunnel is possible without major operational restrictions. The route continues under the tracks of the main station to the main train station under the station square, where the U1 meets the U2 and U3 for the first time. Then the route leads in an elongated left bend under Königstraße to the Lorenzkirche train station and then under Adlerstraße, Josephs and Ludwigsplatz to the station Weißer Turm. This section of the route was the most technically demanding of the entire Nuremberg subway, as both the central hall of the main station and significant historic buildings of the old town are undercut. Running under the Jakobsplatz and the Ludwigstraße, the line of the U1 reaches the station Plärrer and meets there for the second time on the U2 and U3. The station is designed as a direction station, in the upper station level the trains go in the direction of Fürth (U1), Röthenbach (U2) and Gustav-Adolf-Straße (U3)