May 2017 - A double-deck MI09 EMU began operating under ATO on the core section of the line; June 2015 - EUR20mn (USD22mn) contract awarded to Alstom to supply and install automatic train operation (ATO); Project links Saint-Germain-en-Laye, Cergy Le Haut and Poissy in the west with Boissy-Saint-Leger and Marne-la-Vallee - Chessy in the east