Berlin has a very well structured public transportation network, for which you will need a transportation pass (depending on the term, a monthly pass (4-week term) or a monthly pass and two weekly passes (6-week term). For the 3-week term in January it is cheaper to get a monthly pass than 3 weekly passes.You will be informed before the beginning of the FUBiS program about the current prices of this transportation pass.
Please note that there are no discounts on Berlin public transportation tickets/passes for short-term students.
The public transportation system is run by the BVG and is comprised of city trains (the S-Bahn), the metro (the U-Bahn), buses, and trams (Straßenbahn oder Tram). You can also ride regional trains within Berlin with your public transportation pass. On buses you should always show your pass to the bus driver; for the other means of public transportation, just make sure to have your pass on you in case a ticket inspector asks you to show it.
You can look up how to get from one place to another using the “Journey Planner” on the public transportation website www.bvg.de.
Berlin has a 24h public transport system. The main S-Bahn and U-Bahn lines run all night on weekends (i.e. including Friday and Saturday night; Sunday night adheres to the weeknight schedule). On weeknights a night bus system replaces many of the S- und U-Bahn lines. There is always a way to get home using public transportation, even late at night. It might take you an hour longer than usual, but you can save the cab fare. However, taking a cab in Berlin is safe, so don’t be afraid to do so.