▁But ▁there ▁are ▁also ▁A ▁ 6 , ▁A ▁ 6 5 ▁and ▁B ▁ 9 ▁to ▁be ▁mentioned . ▁ ▁Ludwig sh afen ▁Haupt bahn hof ▁is ▁a ▁huge ▁station , ▁its ▁impress ive ▁p yl on ▁bridge ▁pier ▁serving ▁as ▁the ▁city ' s ▁land mark . ▁The ▁extraordinary ▁architecture ▁of ▁the ▁station ▁complex ▁is ▁caused ▁by ▁the ▁need ▁to ▁connect ▁three ▁joining ▁tracks ▁( to ▁Frank ent hal / W orm s / Main z , ▁to ▁Ne ust adt / Spe yer ▁and ▁to ▁Mann heim ) ▁and ▁to ▁work ▁in ▁the ▁under ground ▁Straßen bahn ▁station ▁and ▁the ▁massive ▁road ▁bridge ▁above ▁the ▁conc ourse . ▁Other ▁railway ▁stations ▁are ▁at ▁O gg ers heim , ▁M unden heim , ▁R he ing ön heim , ▁and , ▁the ▁new ▁more ▁central ▁Ludwig sh afen ▁( R hein ) ▁Mitte , ▁near ▁Berliner ▁Platz . ▁Since ▁ 2 0 0 3 , ▁the ▁S - B ahn ▁Rhein - Ne ck ar ▁sub urban ▁train ▁system ▁runs ▁successfully ▁in ▁the ▁region . ▁ ▁Ludwig sh afen ' s ▁public ▁transport ▁system ▁is ▁run ▁by ▁the ▁V BL ▁( Ver kehr s bet rie be ▁Ludwig sh afen ) ▁and ▁the ▁holding ▁companies ▁Rhein - Ne ck ar - Ver kehr ▁( R N V ) ▁and ▁V R N . ▁There ▁is ▁an ▁integrated ▁Mann heim / L ud wig sh afen ▁tram way ▁network ; ▁four ▁tram ▁lines ▁( 4 , 6 , 7 , 8 )