You can obtain information about local public transport routes and fares in Heidelberg online at www.vrn.de.
Detailed advice on bus and train connections can also be obtained at the customer service center of the Rhein-Neckar-Verkehr GmbH (RNV) at Bismarck Square or the main railway station www.rnv-online.de
Bus lines from Heidelberg main station via Bismarckplatz to the Old Town:
Line 32 stop "Universitaetsplatz"
Line 33 stop "Rathaus/Bergbahn"
Line 34 stop "Alte Bruecke Nord"
From Heidelberg Betriebshof you can catch also bus line 35 via Bismarckplatz to Alte Bruecke.
Tram lines to Bismarckplatz:
Moonliner Buses at night
From Friday night to Sunday night or on the eve of public holidays, "Moonliner busses" take you every hour on the hour between 1 a.m. and 4 a.m. from Bismarckplatz to most parts of Heidelberg. Tell the driver when you wish to get off the bus. The driver will also be glad to call you a taxi. Information: www.rnv-online.de