The S-Bahn operates over 320 km of route in the states of Rhineland-Palatinate and Baden-Württemberg, and in small sections in Saarland and Hesse. The network's trains operate about 6 million kilometres per year. 105 stations are served by 40 Class 425.2 Electric multiple units.
The network of the Rhine Neckar S-Bahn is about 290 km long and is one of the largest S-Bahn networks in Germany. The core area is located in the states of Rhineland-Palatinate and Baden-Württemberg. At Homburg (Saar), it touches the Saarland and it has three stations in Hesse between Neckarsteinach and Hirschhorn. Four of the six lines run together on the Schifferstadt–Ludwigshafen–Mannheim–Heidelberg section. From this core section trains run on five branches with termini in Homburg, Osterburken, Karlsruhe, Germersheim and Eppingen.
Services on the Rhine Neckar S-Bahn operate on weekdays at intervals of 30 or 60 minutes. The class 425 electric multiple units are equipped with a toilet and a have fewer doors than class 423s. They have a floor height of 780 mm. The S-Bahn lines are shared with the other passenger and freight traffic. Services operate at regular intervals and the stations have been consistently upgraded for barrier-free access.
|Homburg (Saar) – Osterburken
Homburg (Saar) – Kaiserslautern – Neustadt (Weinstraße) – Schifferstadt – Ludwigshafen (Rhein) – Mannheim – Heidelberg – Neckargemünd – Eberbach – Mosbach (Baden) – Osterburken
|200 km||51||Palatine Ludwig Railway, Rhine Valley Railway, Neckar Valley Railway, Neckarelz–Osterburken line|
|Kaiserslautern – Eberbach (– Mosbach (Baden))
Kaiserslautern – Neustadt (Weinstraße) – Schifferstadt – Ludwigshafen (Rhein) – Mannheim – Heidelberg – Neckargemünd – Eberbach (– Mosbach (Baden))
|110 km (133 km)||31 (36)|
|Germersheim – Karlsruhe
Germersheim – Speyer – Schifferstadt – Ludwigshafen (Rhein) – Mannheim – Heidelberg – Wiesloch-Walldorf – Bruchsal – Karlsruhe
|104 km||25||Schifferstadt–Wörth railway, Palatine Ludwig Railway, Rhine Valley Railway|
|Bruchsal – Germersheim
Bruchsal – Graben-Neudorf – Philippsburg – Germersheim
|32 km||11||Bruhrain Railway|
|Germersheim – Bruchsal
Germersheim – Speyer – Schifferstadt – Ludwigshafen (Rhein) – Mannheim – Heidelberg – Wiesloch-Walldorf – Bruchsal
|83 km||27||Schifferstadt–Wörth railway, Palatine Ludwig Railway, Rhine Valley Railway|
|Heidelberg – Eppingen
Heidelberg – Neckargemünd – Meckesheim – Sinsheim (Elsenz) – Eppingen
|43 km||17||Elsenz Valley Railway, Steinsfurt–Eppingen line|
|(Heidelberg –) Meckesheim – Aglasterhausen
(Heidelberg – Neckargemünd –) Meckesheim – Aglasterhausen
|19 km (39 km)||7 (14)||(Elsenz Valley Railway,) Meckesheim–Neckarelz line|
Operating pattern 
All six lines of the Rhine Neckar S-Bahn operate on a 60-minute basic frequency. As a result of largely overlapping alignments in the core area services run at half-hourly frequency. On the core line between Schifferstadt and Heidelberg four lines run, each at hourly intervals, but due to problems of coordination may not provide a pure 15-minute interval schedule. In addition, the stations of Ludwigshafen-Rheingönheim and Ludwigshafen-Mundenheim are not usually served by lines S1 and S3. Line S1 usually serves stations Mannheim Rangierbahnhof and Mannheim-Seckenheim. On Saturday afternoons and Sundays, S2 services from Kaiserslautern terminate early in Heidelberg and S4 services run only between Germersheim and Mannheim.
Although the lines run from 05:00 until 01:30, regular interval operations usually run only between about 08:00 and 21:00.
On 14 December 2003, the Rhine-Neckar area became the last large densely-populated area in Germany to receive an S-Bahn system - planning lasted decades involving the co-ordination of the states of Baden-Württemberg, Hesse and Rhineland-Palatinate. Following European-wide advertising for tenders, the operation of the Rhine Neckar S-Bahn for 12 years until 2015 was awarded to DB Regio.
First stage of development 
Beginning in 2001, the lines and stations were prepared for S-Bahn operations. € 260 million was invested for construction and € 190 millions for the acquisition of new vehicles. An extra bridge was built over the Rhine between Mannheim and Ludwigshafen, urgently required to increase capacity, along with a by-pass of Schifferstadt station for long-distance traffic and the new Ludwigshafen-Mitte S-Bahn station in Berliner Platz. A new S-Bahn workshop was established for the maintenance of the regions lines near Ludwigshafen Hauptbahnhof (central station).
It was considered important to provide a large amount of uniform equipment at the stations. The platforms were raised to 76 cm and made accessible by the disabled, partly via elevators. In addition they received new platform equipment, such as waiting room and seating.
The platforms at Mannheim-Seckenheim, Mannheim-Rangierbahnhof, Ludwigshafen-Mundenheim and Ludwigshafen-Rheingönheim were raised temporarily using wooden planks, since no decision had been made on the final configuration of the track or the future position of the platforms.
Extension to Germersheim 
The first stage of development of the Rhine-Neckar S-Bahn was completed at the end of 2006 with the extension of the route from Homburg to Kaiserslautern and the extension of the Mannheim-Speyer route to Germersheim. The Speyer route required electrification south of Schifferstadt and modification of three stations. A new station is under construction at Speyer Süd, but its opening has been delayed. A further extension from Germersheim to Graben-Neudorf to Bruchsal was opened in December 2011 and an extension of line S5 of the Karlsruhe Stadtbahn from Wörth am Rhein to Germersheim was opened in December 2010.
Extension to Homburg (Saar) 
The extension of the Mannheim-Kaiserslautern line (Palatine Ludwig Railway) to Homburg was carried out as an urgent project in preparation for the 2006 FIFA World Cup. However, it was not, in fact finished in time for the World Cup and services commenced in December 2006 instead. Only line S1 runs to Homburg; S2 continues to terminate in Kaiserslautern.
Second stage 
Since December 2009 the new S 5 line runs from Heidelberg on the Elsenz Valley Railway to Sinsheim and hourly on the Steinsfurt–Eppingen line to Eppingen. Trains only occasional stop at the two Heidelberg stations of Schlierbach/Ziegelhausen and Orthopädie for scheduling reasons. In June 2010 line S 51 was established, running from Meckesheim via the Schwarzbach Valley Railway every hour to Aglasterhausen.
The Bruhrain Railway (Germersheim–Graben-Neudorf–Bruchsal) was extended from Germersheim to Bruchsal in December 2011. This required considerable modernisation and electrification between Graben-Neudorf and Germersheim. The new line was integrated into the 2011 timetable as "S 33" (to avoid confusion with lines of the Karlsruhe Stadtbahn). The total cost of new infrastructure amounted to € 31.7 million. The upgrade began in early July 2010 and was completed for the December 2011 timetable change.
Planned expansion 
The Rhine-Neckar S-Bahn was intended from the outset to have a second stage of development, in order to integrate additional cities and regions into the S-Bahn network. The schedule set out in the Realisierungsprogramm 2010 for the second stage to be completed between 2008 and 2010, was rejected in 2006. Planning is continuing, however, and the additional lines may be completed in the 2010-2015 period.
Expansion of the Rhine Valley Railway 
Due to the high utilisation on the Rhine Valley line on the Bruchsal–Heidelberg section it is planned to extend the platforms from 140 to 210 metres, so that longer trains can run.
This proposed would create a new S3 service (included in both the RheinNeckar S-Bahn and the Karlsruhe Stadtbahn), using the Rhine line, which runs on the Mannheim–Schwetzingen–Graben-Neudorf–Karlsruhe route on the right (east) bank of the Rhine. The alignment depends on the decision over the proposed Frankfurt–Mannheim high-speed railway – a bypass solution with a new ICE station would favour an alignment via Mannheim-Seckenheim over Mannheim-Rheinau.
In the southern section of electrification and reconstruction of platforms is complete. Since December 2009, S-Bahn services run from Heidelberg on the Elsenz Valley Railway to Sinsheim or hourly on Steinsfurt–Eppingen line to Eppingen (line S5). Since June 2010, the S51 line runs on the Schwarzbach Valley Railway to Aglasterhausen. In Eppingen there is a connection to the Karlsruhe Stadtbahn. Services will connect in Sinsheim with the Heilbronn Stadtbahn to Heilbronn, which is planned to open in 2012.
In 2015, the two new S-Bahn lines are planned to be extended from Heidelberg to Mannheim, running non-stop between Heidelberg Hauptbahnhof and Mannheim Hauptbahnhof.
South Hesse 
Another new S-Bahn service is planned to connect Mannheim to the Hessian marshes and the Bergstraße. Two sections, Biblis–Mannheim (Ried Railway, German: Riedbahn) and Mannheim-Weinheim–Darmstadt (Main-Neckar line), are to be combined to minimise traffic conflicts at Mannheim Hauptbahnhof, in order not to exacerbate limited capacity there.
The creation of this new S-Bahn service is problematic:
- Both the Ried Railway and the Main-Neckar line carry long-distance, regional and goods traffic and the lines are at the limit of their capacity. Since the opening of the Cologne-Frankfurt high-speed line, in particular, traffic on the double-line Ried Railway has increased further and causes substantial problems for regional traffic. While, a proposal to convert the Riedbahn to four lines was rejected many years ago, it is currently proposed to construct a new Rhine/Main-Rhein/Neckar high speed line. This project was once planned to be completed in 2007, but an agreement about the route has only recently been achieved.
- The planned connection of the two branches to Biblis and Darmstadt in Mannheim (creating a U-shaped curve) is intended to reduce traffic conflicts, not to cater for traffic demand, and will force most passengers to transfer, if not bound for stations between Ludwigshafen Hbf and Mannheim Seckenheim. An improvement to the capacity in the Mannheim area (as now planned in connection with the new high speed line) would allow better connections, which are still under discussion.
- Integration with the Hesse and/or RMV services at Biblis (in addition to Darmstadt) has not been agreed. The use of the S-Bahn to Biblis would clearly be higher, if a connection could be made with the Rhine-Main S-Bahn line S7. An extension of the S7 from Riedstadt Goddelau to Biblis (and possibly Worms) was previously discussed, but an isolated cost-benefit analysis produced an unfavourable result, but a comprehensive investigation on the effect of linking the two S-Bahn systems at Biblis has not been carried out.
- "Die neue Linie S33 zwischen Germersheim und Bruchsal". S-Bahn RheinNeckar. 10 November 2011. Retrieved 12 December 2011.
- "S-Bahn Rhein-Neckar – Netz wird weiter ausgebaut" (in German). VRN. Retrieved 16 January 2011.
- "S-Bahn Rhein-Neckar: Ausbau zwischen Bruchsal und Germersheim" (in German). Eurailpress. 14 January 2010. Retrieved 16 January 2011.
- "Der "Renner" S-Bahn sorgt für Kontroversen" (in German). Rhein-Neckar-Zeitung im Web. 18 November 2009. Retrieved 16 January 2011.
- Werner Schreiner: ... an einem Strang. Ludwigshafen am Rhein 2004, ISBN 3-934845-17-7 (German)
|Wikimedia Commons has media related to: Rhine-Neckar S-Bahn|
- "Rhine-Neckar S-Bahn website" (in German). Deutsche Bahn. Retrieved 16 January 2011.
- "Verkehrsverbunds Rhein-Neckar website" (in German). Retrieved 16 January 2011.
- "Line map of Rhine-Neckar S-Bahn" (PDF, about 150 kB) (in German). Retrieved 16 January 2011.