View source for MI 2N

{{short description|Double-deck trainsets operated on the French RER network}}
{{Infobox train
| background = 
| name = MI 2N
| image = Z_3500_-_MI_2N_Altéo_-_RATP.jpg
| imagealt = 
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| caption = [[Altéo|MI 2N "Altéo"]] (operated by [[RATP Group|RATP]]) departing the [[Houilles–Carrières-sur-Seine station]] on the [[RER A]] line.
| interiorimage = MI2N salle haute 2+2 par Cramos.JPG
| interiorimagealt = 
| interiorcaption = MI 2N "Altéo" interior, upper deck
| service = 1997&ndash;present
| manufacturer = [[Alstom|GEC Alsthom]] and [[Ateliers du Nord de la France|ANF]]
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| family = [[X'Trapolis]]
| replaced = 
| yearconstruction = 1995&ndash;2005
| yearservice = 6 June 1997
| refurbishment = 2019&ndash;2021 (expected)
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| numberservice = 96 trainsets (480 cars)
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| carlength = {{Convert|22|m|ftin|abbr=on}}
| width = {{Convert|2.9|m|ftin|abbr=on}}
| height = {{Convert|4.32|m|ftin|abbr=on}}
| lowfloor = 
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| doors = 3 pairs per side
| lines = {{rint|paris|r|}} {{rint|paris|r|A}}
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The '''MI 2N''' (French: ''Matériel d'Interconnexion à 2 Niveaux'', English: ''two-level interconnection rolling stock'') is a family of [[Bilevel rail car|double-deck]], [[Multi-system (rail)|dual-voltage]] [[electric multiple unit]] trainsets that are operated on the [[Réseau Express Régional]] (RER), a hybrid [[Commuter rail|suburban commuter]] and [[rapid transit]] system serving [[Paris]] and its [[Île-de-France]] suburbs.

There are two variants of the MI 2N that look very similar but feature different motorization and interior layout:
* The [[Altéo|MI 2N "Altéo"]] is operated by [[RATP Group|RATP]] on the [[RER A]] line. 43 trains or 215 cars were built.
* The [[SNCF Class Z 22500|Class Z 22500]] (MI 2N "Eole") is operated by [[SNCF]] on the [[RER E]] line. 53 trains or 265 cars were built.

[[Image:Z22500_tore_gretz.JPG|thumb|left|[[SNCF Class Z 22500]] (MI 2N "Eole") at [[Gretz-Armainvilliers station]] on the [[RER E]] line.]]
The trainsets were by a [[consortium]] of [[France|French]] manufacturer [[Alstom]] (at the time known as [[General Electric Company plc|GEC Alstom]]) and [[Canada|Canadian]] conglomerate [[Bombardier Transportation|Bombardier]]. The final assembly of the trains was performed at Alstom's [[Valenciennes]] factory and Bombardier's [[Crespin, Nord|Crespin]] factory between 1995 and 2005.

The double-decker trains grew out of an effort to increase capacity on the RER A line, one of the world's busiest routes. These trains could carry up to 2,600 people per train, compared to 1,887 people on the single-deck trains that had been used on the RER A since it opened. These double-deck trains proved so successful and popular, operators of the RER A went on to purchase 140 [[MI 09]] trainsets, an improved version of the MI 2N that would be built by the same Alstom-Bombardier consortium. 

Having this capacity to transport more than 2600 passengers, which can be distinguished from the layout of the MI 2N trains, is the fact that they have 15 doors on each side, including 3 per car. Having a width of 2m which allows to take out and input 4 people on such door namely the unit of the flow rate of users (voy.m3). What is worth a train in single unit a flow of 60 people and train in multiple unit of 120 people. 
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== External links ==
*[https://web.archive.org/web/20131103054523/http://www.metro-pole.net/expl/materiel/mi2n/mi2n.html MI 2N page on Metro-pole.net] {{in lang|fr}}

{{SNCF units}}
{{RER rolling stock}}

[[Category:Double-decker EMUs]]
[[Category:Electric multiple units of France]]
[[Category:SNCF multiple units]]
[[Category:Train-related introductions in 1997]]
{{France-rail-transport-stub}}