Rhine-Main S-Bahn
Encyclopedia
S-Bahn Rhein-Main
Transport Organisation Rhein-Main-Verkehrsverbund (RMV)
Lines 9
Total length about 303 km
Stations 108
Underground stations 12
Regional/Inter-city Stations 7
Population in the area covered about 3,400,000
Customers per day about 400,000
Highest frequency 15 Min.

The Rhine-Main S-Bahn
S-Bahn
S-Bahn refers to an often combined city center and suburban railway system metro in Austria, Germany, Switzerland and Denmark...

 system is an integrated rapid transit and commuter transport system for the Frankfurt/Rhine-Main region, which includes the cities Frankfurt am Main, Wiesbaden
Wiesbaden
Wiesbaden is a city in southwest Germany and the capital of the federal state of Hesse. It has about 275,400 inhabitants, plus approximately 10,000 United States citizens...

, Mainz
Mainz
Mainz under the Holy Roman Empire, and previously was a Roman fort city which commanded the west bank of the Rhine and formed part of the northernmost frontier of the Roman Empire...

, Offenbach am Main, Hanau
Hanau
Hanau is a town in the Main-Kinzig-Kreis, in Hesse, Germany. It is located 25 km east of Frankfurt am Main. Its station is a major railway junction.- Geography :...

 and Darmstadt
Darmstadt
Darmstadt is a city in the Bundesland of Hesse in Germany, located in the southern part of the Rhine Main Area.The sandy soils in the Darmstadt area, ill-suited for agriculture in times before industrial fertilisation, prevented any larger settlement from developing, until the city became the seat...

. The network comprises nine S-Bahn lines, eight of which currently travel through the cornerstone of the system, an underground tunnel (the "Citytunnel") through central Frankfurt. The first section of this tunnel was opened on May 28, 1978. Further tunnel sections were opened in 1983 and 1990, before its completion in 1992. The system belongs to the Rhein-Main-Verkehrsverbund
Rhein-Main-Verkehrsverbund
The Rhein-Main-Verkehrsverbund is an organised transport network in the German state of Hesse, centred around the city of Frankfurt am Main. Its head office is located in Hofheim im Taunus...

 (RMV) and is operated by DB Regio AG
DB Regio
DB Regio AG is a subsidiary of Deutsche Bahn which operates short and medium distance passenger train services in Germany, and operates light and heavy rail infrastructure in the United Kingdom.-Germany:...

, a subsidiary of Deutsche Bahn AG
Deutsche Bahn
Deutsche Bahn AG is the German national railway company, a private joint stock company . Headquartered in Berlin, it came into existence in 1994 as the successor to the former state railways of Germany, the Deutsche Bundesbahn of West Germany and the Deutsche Reichsbahn of East Germany...

.

End-to-end journey times on the nine lines in the system range from 36 minutes (on line S7) up to 87 minutes (on line S1). The longest journey time into central Frankfurt (Hauptwache
Frankfurt (Main) Hauptwache station
Hauptwache station is a major station in Frankfurt am Main with 181,000 passengers per day, making it the second busiest rapid transit station in the city and a major hub for rail transport in the Frankfurt/Rhine-Main region. It is served by eight S-Bahn lines—S1–S6 and S8/S9—and 6 U-Bahn...

), from any point on the network, is 54 minutes. Services on some lines start shortly after 4 a.m, while all lines have services from about 5 a.m. onwards. A full service is maintained from 6 a.m. until about 8 p.m., and a somewhat reduced service is run until the late evening. The last services leave Frankfurt at about 1:20 a.m.

The S-Bahn system is quite closely integrated with other components of the region's transport system, such as the bus services in the various cities and towns, the tram services in Mainz, Frankfurt and Darmstadt, and the Frankfurt U-Bahn
Frankfurt U-Bahn
The Frankfurt U-Bahn, together with the Frankfurt S-Bahn and the Frankfurt Straßenbahn, is the backbone of the public transport system of Frankfurt, Germany. Its name derives from the German term for underground, Untergrundbahn. The U-Bahn opened in 1968 and now consists of 87 stations on nine...

 system. In Frankfurt, connections can be made, at either Hauptwache or its neighbouring station Konstablerwache
Frankfurt (Main) Konstablerwache station
Konstablerwache station is a major station in Frankfurt am Main with 191,000 passengers per day. It is situated at the eastern end of central Frankfurt’s main shopping street, the Zeil in the Konstablerwache plaza—named after the "constable watch-house" that was once located here. The Hauptwache ...

, between the eight cross-city S-Bahn lines and eight of the city's nine U-Bahn lines, while the S-Bahn stations Frankfurt Hauptbahnhof and Frankfurt Süd between them have connection to six of the U-Bahn lines and any of the city's tram lines. Some opportunities for interchange also exist in the suburbs of Frankfurt.

Lines

Since the end of 2003, the system comprises the following lines:
Line Route
Wiesbaden
Wiesbaden Hauptbahnhof
is the Hauptbahnhof for the city of Wiesbaden, the state capital of the German state of Hesse. It is a terminal station at the southern edge of the city center and is served by over 500 long-distance and regional trains and used by more than 30,000 travelers each day.-History:The current station...

 – Frankfurt-Höchst
Frankfurt-Höchst station
The Frankfurt-Höchst station is an important station in the Frankfurt district of Höchst and is the second largest station in the city with twelve tracks. It is currently mainly used by S-Bahn, suburban and regional services...

 – Frankfurt
Frankfurt (Main) Hauptbahnhof
is the central station for Frankfurt am Main. In terms of railway traffic, it is the busiest railway station in Germany. With about 350,000 passengers per day the station is the second most frequented railway station in Germany and one of the most frequented in Europe.- Proto-history :In the late...

 – Citytunnel – Offenbach Ost
Frankfurt-Höchst station
The Frankfurt-Höchst station is an important station in the Frankfurt district of Höchst and is the second largest station in the city with twelve tracks. It is currently mainly used by S-Bahn, suburban and regional services...

 – Rödermark
Rödermark
Rödermark is a town in the Offenbach district in the Regierungsbezirk of Darmstadt in Hesse, Germany, southeast of Frankfurt am Main and northeast of Darmstadt.-Location:...

-Ober Roden
Niedernhausen
Niedernhausen station
Niedernhausen station serves the municipality of Niedernhausen in the German state of Hesse. It is the most important station on the Main-Lahn Railway between the stations of Frankfurt-Höchst and Eschhofen in Limburg an der Lahn...

 – Frankfurt-Höchst – Frankfurt – Citytunnel – Offenbach Ost – Dietzenbach
Dietzenbach
Dietzenbach is the seat of Offenbach district in the Regierungsbezirk of Darmstadt in Hesse, Germany and lies roughly 12 km southeast of Frankfurt am Main on the river Bieber. Before the Second World War, the current town was a farming village with not quite 4,000 inhabitants...

Bad Soden
Bad Soden (Taunus) station
Bad Soden station is the northern terminus of the Soden Railway in the German state of Hesse. It is also the northern terminus of the line S 3 services of the Rhine-Main S-Bahn over the Limes Railway .-Location and facilities :...

 – Frankfurt-West
Frankfurt West station
Frankfurt West station is a regional and S-Bahn station in western Frankfurt am Main, Germany on the Main-Weser Railway, in the district of Bockenheim, near the Frankfurt Trade Fair grounds and the Bockenheim campus of the Goethe University Frankfurt....

 – Frankfurt – Citytunnel – Langen
Langen, Hesse
Langen is a town of roughly 36,000 in the Offenbach district in the Regierungsbezirk of Darmstadt in Hesse, Germany, between Darmstadt and Frankfurt am Main...

 – Darmstadt
Darmstadt Hauptbahnhof
is the Hauptbahnhof of the German city Darmstadt. After Frankfurt Hbf and Wiesbaden Hbf, it is the third largest station in the state of Hesse. It is the second busiest station in Hesse, servicing 35 000 passengers and 220 trains per day....

Kronberg
Kronberg im Taunus
Kronberg im Taunus is a town in the Hochtaunuskreis district, Hesse, Germany. Before 1866, it was in the Duchy of Nassau; in that year the whole Duchy was absorbed into Prussia. Kronberg lies at the foot of the Taunus, flanked in the north and southwest by forests...

 – Frankfurt-West – Frankfurt – Citytunnel – Langen (– Darmstadt)
Friedrichsdorf
Friedrichsdorf
Friedrichsdorf is a town of the Hochtaunuskreis, some north of Frankfurt am Main in Hesse, Germany.-Location: Friedrichsdorf is located in the Taunus area, ranking third among the Hochtaunuskreis boroughs after Bad Homburg vor der Höhe and Oberursel...

 – Frankfurt-West – Frankfurt – Citytunnel – Frankfurt-Süd
Friedberg
Friedberg station
Friedberg station is the station of Friedberg, Germany, on the Main-Weser Railway.-First Station:The first Friedberg station was opened on 10 May 1850 with the opening of the section of the Main-Weser Railway from Frankfurt am Main to Friedberg. On 9 November 1850 the next section to Butzbach was...

 – Frankfurt-West – Frankfurt – Citytunnel – Frankfurt-Süd
Riedstadt
Riedstadt
Riedstadt, with its municipal area of 73.76 km² is Groß-Gerau district's biggest town by land area. It lies in Hesse, Germany, about 12 km southwest of Darmstadt.-Location:...

-Goddelau
 – Groß-Gerau
Groß-Gerau
Groß-Gerau is the district seat of the Groß-Gerau district, lying in the southern Frankfurt Rhein-Main Region in Hesse, Germany, and serving as a hub for the surrounding area.-Location:...

 Dornberg – Frankfurt Hauptbahnhof
Frankfurt (Main) Hauptbahnhof
is the central station for Frankfurt am Main. In terms of railway traffic, it is the busiest railway station in Germany. With about 350,000 passengers per day the station is the second most frequented railway station in Germany and one of the most frequented in Europe.- Proto-history :In the late...

Wiesbaden – Mainz
Mainz Hauptbahnhof
is the Hauptbahnhof for the city of Mainz in the German state of Rhineland-Palatinate. It is used by about 80,000 travellers and visitors each day and is therefore one of the busiest 21 stations in Germany...

 – Frankfurt Airport – Frankfurt – Citytunnel – Offenbach Ost – Hanau
Hanau Hauptbahnhof
is the central station for Hanau, Germany and a major rail junction east of Frankfurt am Main.The first Hanau station was built on the Frankfurt-Hanau Railway at the location of the current Hanau West station, close to Hanau city centre....

Wiesbaden – Mainz-Kastel
Mainz-Kastel
Mainz-Kastel is a district administered by the city of Wiesbaden, Germany. Mainz-Kastel was formerly a district of the city of Mainz, until the public administration by the city of Wiesbaden was decided on August 10, 1945...

 – Frankfurt Airport – Frankfurt – Citytunnel – Offenbach Ost – Hanau

The Early Years

Plans for a rail connection between the central rail station (Hauptbahnhof) in Frankfurt and the Hauptwache, the central commuter destination in the city, were started in the early 1960s. Construction work on the project started in 1969. During the construction phase, some rearrangements were carried out to the commuter network in the area around Frankfurt, including creation of a link line between Bad Soden am Taunus and Niederhöchstadt.

In 1978 the first section of the "Citytunnel" of the Rhine-Main S-Bahn was opened, with all lines sharing the tunnel between Hauptbahnhof and Hauptwache. The initial system, which lay entirely to the north of the river Main, comprised the following lines:
  • S1: Wiesbaden Hbf
    Wiesbaden Hauptbahnhof
    is the Hauptbahnhof for the city of Wiesbaden, the state capital of the German state of Hesse. It is a terminal station at the southern edge of the city center and is served by over 500 long-distance and regional trains and used by more than 30,000 travelers each day.-History:The current station...

     – Höchst
    Frankfurt-Höchst station
    The Frankfurt-Höchst station is an important station in the Frankfurt district of Höchst and is the second largest station in the city with twelve tracks. It is currently mainly used by S-Bahn, suburban and regional services...

     – Hauptbahnhof – Hauptwache
    Frankfurt (Main) Hauptwache station
    Hauptwache station is a major station in Frankfurt am Main with 181,000 passengers per day, making it the second busiest rapid transit station in the city and a major hub for rail transport in the Frankfurt/Rhine-Main region. It is served by eight S-Bahn lines—S1–S6 and S8/S9—and 6 U-Bahn...

  • S2: Niedernhausen – Höchst – Hauptbahnhof – Hauptwache
  • S3: Frankfurt-Höchst – Bad Soden – Frankfurt West
    Frankfurt West station
    Frankfurt West station is a regional and S-Bahn station in western Frankfurt am Main, Germany on the Main-Weser Railway, in the district of Bockenheim, near the Frankfurt Trade Fair grounds and the Bockenheim campus of the Goethe University Frankfurt....

     – Hauptbahnhof – Hauptwache
  • S4: Kronberg
    Kronberg im Taunus
    Kronberg im Taunus is a town in the Hochtaunuskreis district, Hesse, Germany. Before 1866, it was in the Duchy of Nassau; in that year the whole Duchy was absorbed into Prussia. Kronberg lies at the foot of the Taunus, flanked in the north and southwest by forests...

     – Frankfurt West – Hauptbahnhof – Hauptwache
  • S5: Friedrichsdorf
    Friedrichsdorf
    Friedrichsdorf is a town of the Hochtaunuskreis, some north of Frankfurt am Main in Hesse, Germany.-Location: Friedrichsdorf is located in the Taunus area, ranking third among the Hochtaunuskreis boroughs after Bad Homburg vor der Höhe and Oberursel...

     – Frankfurt West – Hauptbahnhof – Hauptwache
  • S6: Friedberg
    Friedberg station
    Friedberg station is the station of Friedberg, Germany, on the Main-Weser Railway.-First Station:The first Friedberg station was opened on 10 May 1850 with the opening of the section of the Main-Weser Railway from Frankfurt am Main to Friedberg. On 9 November 1850 the next section to Butzbach was...

     – Frankfurt West – Hauptbahnhof – Hauptwache


In 1980, two further lines were added to the network, made possible by construction of a new rail bridge over the river Main:
  • S14: Wiesbaden
    Wiesbaden Hauptbahnhof
    is the Hauptbahnhof for the city of Wiesbaden, the state capital of the German state of Hesse. It is a terminal station at the southern edge of the city center and is served by over 500 long-distance and regional trains and used by more than 30,000 travelers each day.-History:The current station...

     – Mainz
    Mainz Hauptbahnhof
    is the Hauptbahnhof for the city of Mainz in the German state of Rhineland-Palatinate. It is used by about 80,000 travellers and visitors each day and is therefore one of the busiest 21 stations in Germany...

     – Flughafen
    Frankfurt (Main) Flughafen Regionalbahnhof
    Frankfurt Airport Regional station is an underground railway station in Frankfurt am Main, Germany that connects Frankfurt Airport to local S-Bahn and Regionalbahn services. It opened on 14 March 1972 as part of the new terminal opened at the airport...

     – Hauptbahnhof (main arrivals hall)
  • S15: Flughafen – Hauptbahnhof – Hauptwache


Completion in 1983 of a 600m long easterly extension of the Citytunnel, as far as Konstablerwache, improved the opportunities for train turnaround in the tunnel. At this stage lines S1–S6 and line S14 were extended to Konstablerwache, while the S15 was rerouted to the main arrivals hall of the Hauptbahnhof.

Later Developments

In 1990 the Citytunnel was extended, adding the underground stations Ostendstrasse and Lokalbahnhof to the system, along with the overground station Frankfurt Süd. All the lines (with the exception of the S15) were extended to Frankfurt Süd, while the S5 and S6 were further extended a short time later to a new station at Stresemannallee, south-west of Frankfurt Süd.

In 1992, S1 and S2 trains were diverted to the new Mühlberg underground station, the first station in the direction of Offenbach. This left the S3, S4, S5 and S6 serving all the stations between Hauptbahnhof and Frankfurt Süd, a situation which still pertains to this day. The S14, which is now the S8, also served all of these stations. In 1995, the newly instituted RMV increased train frequency from a 20/40/60 minute schedule (depending on the time of day) to the 15/30/60 minute schedule which is still used in the system. The S15 ceased operations at this stage.

Also in 1995, a new underground alignment through the city of Offenbach was opened, assisting the rerouting of the S14 (renamed the S8) through Mühlberg to City-Tunnel Offenbach and Hanau. The S1 was also extended as far as Offenbach, while the S2 returned to serving Frankfurt Süd. In 1997, the routes of the S5 and S6 were shortened slightly, so that they travelled only as far as Frankfurt Süd, while the S3 and S4 were extended to Darmstadt and Langen. The section of the S3 between Höchst and Bad Soden im Taunus also ceased to be served by S-Bahn trains.

In 1999, the S8 was effectively divided into two lines, the S8 and S9, both of which travel between Hanau and Wiesbaden via Bischofsheim
Bischofsheim (Mainspitze)
Bischofsheim is a municipality in Groß-Gerau district in Hesse, Germany with a population of more than 12,000.- Location :Bischofsheim lies south of the Main and east of the Rhine in the so-called Mainspitze triangle, a narrow piece of land between the Main and Rhine where the former empties into...

. The S8 continues to travel through the centre of Mainz, while the S9 travels via Mainz-Kastel
Mainz-Kastel
Mainz-Kastel is a district administered by the city of Wiesbaden, Germany. Mainz-Kastel was formerly a district of the city of Mainz, until the public administration by the city of Wiesbaden was decided on August 10, 1945...

. This arrangement means that it is possible to travel between Wiesbaden, the capital of the state of Hesse
Hesse
Hesse or Hessia is both a cultural region of Germany and the name of an individual German state.* The cultural region of Hesse includes both the State of Hesse and the area known as Rhenish Hesse in the neighbouring Rhineland-Palatinate state...

, and Frankfurt, the state's largest city, by three different routes. In the same year, a new station on lines S3-S6 was opened in the Frankfurt fairground (Messe
Frankfurt Trade Fair
Frankfurt Trade Fair , with 448,000,000 Euros in sales and over 1,600 active employees, is one of the world's largest trade fair companies. The group has a global network of 28 subsidiaries, five branch offices, and 52 international sales partners. Thus, the Messe Frankfurt is present in over 150...

).

In 2002, a new S-Bahn line, the S7, between Frankfurt Hauptbahnhof (main arrivals hall) and Riedstadt-Goddelau was added to the system (replacing the regional train line on the northern part of the Riedbahn). Due to a shortage of capacity in the Citytunnel, these trains are not currently able to reach Frankfurt's inner city. At present, these trains do not operate on a 30 minute schedule because of several ICE lines that operate on the same tracks.

In 2003 the Rodgaubahn, a commuter rail system serving Offenbach and its environs, was incorporated into the Rhine-Main S-Bahn system. This resulted in the S1 being extended from Offenbach Ost to Rödermark-Ober Roden, while the S2 was also rerouted from Frankfurt Süd to serve Offenbach Ost and all stations to its new terminus in Dietzenbach.

The current system has an almost 5-minute frequency for services between Frankfurt and Offenbach Ost and an actual 5-minute frequency for services between Frankfurt Hauptbahnhof and Frankfurt Süd. The group of lines S1, S2, S8 and S9 all share 10 stations, as do the group of lines S3, S4, S5 and S6. All the lines, with the exception of the S7, share 5 stations. Initially this arrangement gave rise to some considerable delays caused by poorly functioning signalling. To some extent this has been allayed by routing every second westbound S2 train in peak times to Offenbach am Main (Hauptbahnhof) and every second eastbound S2 train in peak times to the main arrivals hall of the Frankfurt Hauptbahnhof, rather than running these services through the Citytunnel. Reconstruction of the signalling technology in the Citytunnel would enable all westbound S2 trains to travel all the way to Niedernhausen at a frequency of 15 minutes.

The future

Current plans for the system include incorporation of a line, largely running north of the river Main, via Maintal, to Hanau. This is envisaged as an extension of the S7 line from Riedstadt-Goddelau, which currently terminates in the main arrivals hall of the Hauptbahnhof, with a frequency of 15 minutes for services to/from Frankfurt-Fechenheim (which will replace the current station at Mainkur) and a 30 minute frequency for services to/from Hanau. Other possible projects include an extension of the S1 from Rödermark-Ober-Roden
Rödermark
Rödermark is a town in the Offenbach district in the Regierungsbezirk of Darmstadt in Hesse, Germany, southeast of Frankfurt am Main and northeast of Darmstadt.-Location:...

 to Dieburg
Dieburg
Dieburg is a town in southern Hessen, Germany. It was formerly the seat of the district of Dieburg, but is now part of the district of Darmstadt-Dieburg.-History:...

, an extension of the S7 from Riedstadt-Goddelau to Biblis
Biblis
Biblis is a community in the Bergstraße district in southern Hesse, Germany.- Location :The community lies in the Rhine rift west of the Odenwald between Darmstadt to the north and Mannheim to the south; it also lies north of Bürstadt...

, or a branch of the S7 to Groß-Gerau
Groß-Gerau
Groß-Gerau is the district seat of the Groß-Gerau district, lying in the southern Frankfurt Rhein-Main Region in Hesse, Germany, and serving as a hub for the surrounding area.-Location:...

.

A number of new stations are planned for existing lines, e.g., for areas which have shown increased populations over recent decades. These include:
  • Frankfurt-Ginnheim
    Ginnheim (Frankfurt am Main)
    Ginnheim is a district or Stadtteil of Frankfurt am Main, Germany. It is part of the Ortsbezirk Mitte-Nord....

     on the S6
  • Offenbach Ulmenstraße on the S8 and S9

Punctuality

The biggest problem experienced on the Rhine-Main S-Bahn is frequent unpunctuality, one reason for which is the shortage of capacity in the Citytunnel. Capacity of the tunnel was increased from 22 trains per hour (in each direction) to 24 trains per hour in 2008 by optimising the Punktförmige Zugbeeinflussung
Punktförmige Zugbeeinflussung
PZB or Indusi is an intermittent cab signalling system and train protection system used in Germany, Austria, Slovenia, Croatia, Romania, Israel and on one line in Canada....

signalling system, rather than upgrading the system to the more modern Linienzugbeeinflussung
Linienzugbeeinflussung
Linienzugbeeinflussung is a cab signalling andtrain protection system used on selected German and Austrian railway linesas well as the AVE in Spain.In Germany, the system is mandatory on all lines where trains exceed speeds of...

(LZB) system, as used on the Munich S-Bahn
Munich S-Bahn
The Munich S-Bahn is an electric rail transit system in Munich, Germany. "S-Bahn" is the German abbreviation for stadtschnellbahn , and the Munich S-Bahn exhibits characteristics of both rapid transit and commuter rail systems.The Munich S-Bahn network is operated by S-Bahn München, a subsidiary...

to achieve a throughput of 30 trains per hour in each direction in the Munich core city tunnel.

A further cause of delays is that many of the S-Bahn lines share track with freight trains, regional trains and inter-city trains. Longer distance passenger trains take priority over the S-Bahn, which frequently has to stand for up to 10 minutes to allow the other service to overtake. Mixed services are particularly found along the S6, S7, S8 and S9 routes. The operators recognise the need to separate S-Bahn services from other services along these routes. The first stage towards this was originally scheduled to start in 2007, doubling the number of tracks from two to four on the S6 line between Westbahnhof and Bad Vilbel, but in October 2011 Deutsche Bahn stated that it expected work to start in 2014 and the line to go into service in 2018 .
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