Nanterre-Préfecture (Paris RER)

Nanterre-Préfecture
RER station
Platform for Cergy/Poissy
Location	France
Coordinates	48°53′44″N 2°13′23″E / 48.895631°N 2.223138°E / 48.895631; 2.223138Coordinates: 48°53′44″N 2°13′23″E / 48.895631°N 2.223138°E / 48.895631; 2.223138
Owned by	RATP
Line(s)
Other information
Fare zone	IDF/3
History
Opened	1 October 1973
Services
Preceding station   RER   Following station Nanterre – Université toward Saint-Germain-en-Laye La Défense toward Boissy-Saint-Léger or Marne-la-Vallée - Chessy Houilles-Carrières-sur-Seine toward Cergy-le-Haut or Poissy
Location
Nanterre-Préfecture Location within Île-de-France (region)

Nanterre-Préfecture is a RER train station in the commune of Nanterre, west of central Paris, in the department of Hauts-de-Seine in France. The station was opened on 1 October 1973, on the "ligne de St-Germain" connecting Auber and Saint-Germain. Currently, it is the westernmost station of the central section of RER A line. Line A splits here further to the west, into A1 (to Saint-Germain-en-Laye) and A3+A5 (to Cergy-le-Haut and Poissy).

Nanterre-Préfecture is an underground station located close to the prefecture of the department of Hauts-de-Seine, hence the name. The central part of RER A, as well as A1 to Germaine-en-Laye, are operated by RATP. The branches A3 to Cergy and A5 to Poissy are operated by SNCF. The station has the central platform, where trains depart to the center of Paris, and two side platforms, one for A1 and one for A3/A5.

In 1965, following the extension of the agglomeration far beyond the city limits of Paris, RATP and SNCF came out with the plan of the transport network development, which, in particular, included the development of RER. In 1969, RATP bought from SNCF the railway connecting Boisy-Saint-Léger and Bastille and built a stretch between Bastille and Nation. On 14 December the new line (RER) started operation. On 21 January 1970, RATP bought a railway line between Gare Saint-Lazare and Saint-Germain-en-Laye ("ligne de St-Germain"). On 1 October 1972, the service started between Auber and Saint-Germain-en-Laye. This stretch was not yet connected to the eastern part of RER A. In October 1973 the station of Nanterre-Préfecture was open in the existing tunnel and started operation. On 9 December 1977, the western and the eastern stretches were connected, and thus Nanterre-Préfecture was placed on RER A line. On 29 May 1988, service in the direction of Cergy started.