EOLE – Westward extension of the RER Line E

EOLE – Westward extension of the RER Line E

In 2011, SYSTRA was appointed to represent the Contracting Authority for the underground section of the preliminary phase of the EOLE (Est Ouest Liaison Express) project, followed by a second assignment assisting the Contracting Authority with the project design phase of the transport systems.

The EOLE project involves extending the RER E westward from the station at Haussmann Saint-Lazare to the station at Mantes-la-Jolie, to help relieve congestion on the network.

SYSTRA worked in three fields:

  • Infrastructure:
    - New underground infrastructure;
    - 3 new stations: at Porte Maillot, at la Défense and at Nanterre la Folie;
    - Rearranging of the site called “ Les Groues” at Nanterre la Folie;
    - Connections to the existing railway line;
    - Redesigning the existing line.
  • Operations: deployment of a new CBTC railway signalling system called NexTEO France (New train operating for EOLE);
  • Purchase of new rolling stock.
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