Ludwigshafen am Rhein to Karlsruhe (RE 4) and Mannheim (RE 14) have also been operated since December 2014 as part of the Süwex network with class 429 railcars. The stations of Dienheim and Frankenthal Süd were opened on 14 June 2015. Line RB 44 became line S 6 of the Rhine-Neckar S-Bahn at the "minor timetable change" on 10 June 2018. Since the timetable change on 9 December 2018, the S 6 S-Bahn services mostly run every half hour. In the future, a connection from Mainz via Worms and Mannheim to Heidelberg is planned. Also trains on Regional-Express lines 4 and 14 have run via the Taunus Railway to Frankfurt Hauptbahnhof since 9 December 2018. The initially proposed stations of Worms Nord and Worms Süd are not to not being built for the time being. There are the following local services: RE 4: (Frankfurt am Main – Hochheim am Main –) Mainz – Worms – Ludwigshafen (Rhein) Hbf – Speyer – Karlsruhe (every two hours) RE 14: (Frankfurt am Main – Hochheim am Main –) Mainz – Worms – Ludwigshafen (Rhein) Mitte – Mannheim (every two hours) S 6: Mainz – Worms – Ludwigshafen am Rhein – Mannheim (mostly every half hour). Notes Railway lines in Rhineland-Palatinate Railway lines opened in 1853 Buildings and structures in Mainz-Bingen