>>1251740>>1251788>>1253292The RE4 was a short lived train line in 1995/96 between Potsdam and Cottbus. In Potsdam it used the Berlin Outer Ring and terminated in Potsdam Pirschheide, which it outside the actual city and has no direct rail connection to the central station Potsdam Stadt (today Hbf). A tram feeder was set up that was labeled as RE4 to Cottbus. In the map it's the thin green line.
