Line U2 (Red) The red line runs from Ruhleben station in West Berlin to the east ending at the North Tickets, fares, lines, routes, timetables and more information about the U-Bahn (subway, underground) in Berlin. Most subway lines operate underground, but some run on above-ground tracks. The U-Bahn is known for its yellow-colored Berlin’s Metro Map provides a clear overview of the U-Bahn and S-Bahn networks, making it easy to plan your journeys and navigate the city’s public transportation syst