M-Bahn
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The M-Bahn or Magnetbahn was an elevated Maglev train line operating in
Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue ...
,
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
, experimentally from 1984 and in passenger operation from 1989 to 1991. The line was in length, and featured three stations, two of which were newly constructed. Presumed to be the future of rail transit in Berlin, the line was built to fill a gap in the
West Berlin West Berlin (german: Berlin (West) or , ) was a political enclave which comprised the western part of Berlin during the years of the Cold War. Although West Berlin was de jure not part of West Germany, lacked any sovereignty, and was under mi ...
public transport network created by the construction of the
Berlin Wall The Berlin Wall (german: Berliner Mauer, ) was a guarded concrete barrier that encircled West Berlin from 1961 to 1989, separating it from East Berlin and East Germany (GDR). Construction of the Berlin Wall was commenced by the government ...
. It was rendered redundant by the reunification of Berlin and was closed to enable reconstruction of the U2 line. The M-Bahn was the second Maglev line to open to public traffic, after the Birmingham Maglev but before the Shanghai maglev train. Construction and running were undertaken by Magnetbahn GmbH.


History

The first section of the
Berlin U-Bahn The Berlin U-Bahn (; short for , "underground railway") is a rapid transit system in Berlin, the capital and largest city of Germany, and a major part of the city's public transport system. Together with the S-Bahn, a network of suburban train li ...
to be built included an elevated section between Gleisdreieck and
Potsdamer Platz Potsdamer Platz (, ''Potsdam Square'') is a public square and traffic intersection in the center of Berlin, Germany, lying about south of the Brandenburg Gate and the Reichstag (German Parliament Building), and close to the southeast corne ...
stations. After the partition of Berlin, Gleisdreieck station was in
West Berlin West Berlin (german: Berlin (West) or , ) was a political enclave which comprised the western part of Berlin during the years of the Cold War. Although West Berlin was de jure not part of West Germany, lacked any sovereignty, and was under mi ...
whilst Potsdamer Platz station was directly under the border to
East Berlin East Berlin was the ''de facto'' capital city of East Germany from 1949 to 1990. Formally, it was the Allied occupation zones in Germany, Soviet sector of Berlin, established in 1945. The American, British, and French sectors were known as ...
. After the building of the
Berlin Wall The Berlin Wall (german: Berliner Mauer, ) was a guarded concrete barrier that encircled West Berlin from 1961 to 1989, separating it from East Berlin and East Germany (GDR). Construction of the Berlin Wall was commenced by the government ...
in 1961, the trains from both sides terminated at the last station before Potsdamer Platz (from the East:
Mohrenstraße Mohrenstraße is a street in central Berlin. It runs from west to east between Wilhelmstraße and , and partially forming the southern edge of Gendarmenmarkt. The Berlin U-Bahn station Mohrenstraße is located at its western end, and is serve ...
). Around 1972 also the two stations before Potsdamer Platz, on the western side, closed, because the area served by these stations was also served by another U-Bahn line. The area of West Berlin adjacent to Potsdamer Platz then required a connection to the U-Bahn, and this need was eventually met by the construction of the M-Bahn, which used the abandoned U-Bahn platforms at Gleisdreieck and the U-Bahn tracks northwards towards the border. It then diverged slightly to the west to terminate close to Potsdamer Platz but still in West Berlin. Work on the line started in 1983, and the first test runs, without passengers, took place in June 1984 on the southern section of the line. Initial testing used a car previously used on Magnetbahn GmbH's test track near Brunswick, and the first two cars specifically built for Berlin were delivered in late 1986. The original intention was for public service to start in May 1987, but a fire at Gleisdreieck Station in April of that year destroyed one of the two cars and badly damaged the other. Eventually four more cars, of the same design as the original two, were built. Several planned opening dates were not met, and in December 1988, a test train failed to stop at Kemperplatz and one of the cars crashed to the ground and was destroyed. A public service eventually started in August 1989, although service was intermittent and not guaranteed, and fares were not charged. Official regular passenger service, as part of Berlin's integrated public transport system, started in July 1991. By this time the Berlin Wall had fallen, something that could not have been predicted when construction started. It became desirable to re-establish the U-Bahn line that had previously been severed, requiring the removal of the M-Bahn from its right of way. The principal need for the M-Bahn had also been removed, as the area served by it was again easily accessible from the Potsdamer Platz station. Dismantling of the M-Bahn started only two months after its official opening, and was completed during February 1992. The U-Bahn connection between Gleisdreieck and Potsdamer Platz Stations was reinstated, becoming part of line U2.


Route

The line ran approximately north-south from a station at Kemperplatz on the edge of the Tiergarten park, with three stations in total, the most southernly being on the lower level of the present-day Gleisdreieck U-Bahn interchange. *''Kemperplatz'' (now the location of the
Sony Center The Sony Center is a Sony-sponsored complex of eight buildings located at the Potsdamer Platz in Berlin, Germany, designed by Helmut Jahn. It opened in 2000 and houses Sony's German headquarters. The cinemas in the center were closed at the end ...
at
Potsdamer Platz Potsdamer Platz (, ''Potsdam Square'') is a public square and traffic intersection in the center of Berlin, Germany, lying about south of the Brandenburg Gate and the Reichstag (German Parliament Building), and close to the southeast corne ...
, close to the present
Berlin Potsdamer Platz railway station Berlin Potsdamer Platz is a railway station in Berlin. It is completely underground and situated under Potsdamer Platz in central Berlin. Regional and S-Bahn services call at the station, and it is also served by U-Bahn line U2. History ...
) *''Bernburger Str.'' (close to the present site of Mendelssohn-Bartholdy-Park U-Bahn station) *''Gleisdreieck'' (now reclaimed for its original U-Bahn use) The new section from Kemperplatz and through Bernburger Str. was double track with two parallel guideways, narrowing to single track between Bernburger and Gleisdreieck as it transferred onto the existing U-Bahn viaducts. The M-Bahn guideway used the western side of the viaducts approaching and into the single platform at Gleisdreieck, with standard gauge railway track remaining on the eastern side. Both ''Kemperplatz'' and ''Bernburger Str.'' stations have since been demolished, along with structure carrying the M-Bahn between them.


Rolling stock

The M-Bahn operated a total of eight cars, although not all were used in public service.


Technology

For propulsion, the M-Bahn used a long stator
linear motor A linear motor is an electric motor that has had its stator and rotor "unrolled", thus, instead of producing a torque (rotation), it produces a linear force along its length. However, linear motors are not necessarily straight. Characteristicall ...
. However, unlike the
Transrapid Transrapid is a German-developed high-speed monorail train using magnetic levitation. Planning for the Transrapid system started in 1969 with a test facility for the system in Emsland, Germany completed in 1987. In 1991, technical readi ...
and other magnetic levitation trains, only 85% of the M-Bahn vehicle weight was supported by
magnetic levitation Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces. The ...
, with the balance being supported by traditional wheels. During operation, the Berlin M-Bahn line ran as an automated driverless operation, although the system had been designed to be driven by a human driver if required. A cross-over existed just south of Kemperplatz, to allow use of double-track running. The M-Bahn train was supported across the points by a length of traditional rail below the guideway to support it across the gap.


In media

The disused elevated track features at some length as a backdrop in Wim Wenders's 1987 film ''
Wings of Desire ''Wings of Desire'' (, ; ) is a 1987 romantic fantasy film written by Wim Wenders, Peter Handke and Richard Reitinger, and directed by Wenders. The film is about invisible, immortal angels who populate Berlin and listen to the thoughts of its ...
''.


References


External links

*
Plan map show M-Bahn and streets

youtube.com: A video showing the partially demolished Berlin wall

''Popular Science'' Dec 1988
{{Automated trains and fixed-guideway transit
M-Bahn The M-Bahn or Magnetbahn was an elevated Maglev train line operating in Berlin, Germany, experimentally from 1984 and in passenger operation from 1989 to 1991. The line was in length, and featured three stations, two of which were newly construc ...
Rapid transit in Germany Driverless Maglev People movers