Potsdam, the capital of the state of Brandenburg, lies just 40 kilometers southwest of Berlin in a beautiful area of woodlands and lakes and premiers railway fans througout the world.
Line length
141.9 km (88.2 mi)
Track gauge
1,435 mm (4 ft 8 1⁄2 in) standard gauge
Electrification
Berlin S-Bahn: 800 V third rail
Griebnitzsee–Magdeburg: 15 kV/16.7 Hz AC overhead catenary
Operating speed
160 km/h (99.4 mph) (maximum)
Route number
201
Potsdam Hauptbahnhof is the main station in the German city of Potsdam, capital of the state of Brandenburg. It lies on the Berlin–Magdeburg railway and was founded in 1838. The first railway from Berlin to Potsdam was opened on 22 September 1838. It was the first railway in Prussia and is now one of the oldest railways in Germany still in operation.
http://en.wikipedia.org/wiki/Potsdam_Hauptbahnhof
Here in Potsdam Hbf was 442 126-9 as RB23 (RB28872) of Potsdam Hbf. to Michendorf.
This is 442-620-1 as RB22 (RB28817) "Airport Express" from Berlin Schönefeld airport to Potsdam Hbf., at the entrance of the Berlin Schönefeld airport.
This is the 442-628-4 as RB23 (RB28857) of Michendorf Potsdam Hbf. at the exit of Potsdam Charlottenhof.
This is the 442-621-9 as RB21 (RB18666) of Potsdam Hbf. to Wustermark at the entrance to Potsdam Park Sanssouci.
In conclusion the trip lasts about 45 minutes from Potsdam to Berlin, with a regional train and is very quiet and comfortable and with inclusion into Train Simulator should be the premier route of everybodys desire to ride the S-Bahn.