page_title: RER D
section_title: Central tunnel opening
hierarchical_section_title: RER D / History / Central tunnel opening
caption_attribution_description: Gare de Villeneuve-Triage
context_page_description: The RER D is one of five RER lines serving Paris, France. It connects Orry-la-Ville and Creil in the north to Melun, Corbeil-Essonnes and Malesherbes in the south, passing through the heart of Paris.
  Opened in stages from 1987 to 1996, it is the longest RER line by distance, and the busiest SNCF line in France, carrying up to 615,000 passengers and operating 466 trains each working day. Almost all of the line is located in the Île-de-France region, that is, within the jurisdiction of the Île-de-France mobilités, but the some of the branch line ends at the north and south are outside this region.
  Due to a high rate of incidents, social issues and poor on time performance, the line is sometimes colloquially known as the "RER poubelle".
  Line D also links Gare du Nord with Gare de Lyon via Châtelet-Les Halles. The northern section of Gare du Nord opened in the late 1980s; a dedicated tunnel opened in 1995 to connect it to the SNCF network south of Gare de Lyon, part of which was transferred to the RER.
context_section_description: On 11 September 1995, the north–south interconnection of the RER D was put into service by building a dedicated 2.5 km (1.6 mi) long tunnel between Châtelet-Les Halles and the Gare de Lyon.
  In 1996, the RER D was extended south from La Ferté-Alais to Malesherbes. On 15 January 1998 for the 1998 FIFA World Cup, Stade de France – Saint-Denis station opened, in order to serve the Stade de France.
  A high number of incidents, from a social and service point of view, have brought the term "RER poubelle" ("RER trash" in French), often used by its users, and even its staff. Assaults are frequent and unpunctuality is the highest in the Transilien network, with the number of late trains going from 9.9% to 14.1% between 1994 and 1995.
caption: Villeneuve – Triage station, in June 2007. On the left, track 2M towards Paris, on the right track 1B towards Villeneuve-Saint-Georges, and next to it, track 2B towards Paris.
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