For the seventh and final year of the 2015-2021 track and ballast renewal project, the RER A will be undergoing work during the summer. This time, it's on the western portion!
This schedule includes all the traffic interruptions between Auber and Nanterre-Université - Cergy - Poissy from 26 June to 29 August, as well as from 9 to 13 August and from 16 to 20 August between Auber and La Défense and on the Poissy branch.
To keep all this information at hand and organize your travels, download our digital calendar! For optimal readability, it is adapted for mobile phone reading. ?
In the meantime, you can continue to visit this dedicated website that is regularly updated, and the line’s Twitter account.
Ask our station agents for the flyer with the dates of the closures. The practical guide to the summer line closures will be available from the end of May in the main stations.