This Thursday, October 2, 2025, RER E users in Hauts-de-Seine and Paris are facing a major traffic disruption. A technical incident in the morning is blocking traffic between Nanterre La Folie and Haussmann in both directions, as announced by SNCF on its X account. This disruption is in addition to the difficulties already foreseen due to the industrial action affecting the line throughout the day.
According to information provided by the rail company, the section affected by the total disruption includes several strategic stations on the Paris region network. Passengers are thus unable to reach La Défense - Grande Arche and Neuilly-Porte Maillot, two stops particularly popular with working people heading for the business district. The technical incident, the precise nature of which has not been detailed by SNCF, is forcing the operator to suspend all traffic on this central portion of the line.
Beyond the area of complete disruption, the entire RER line E is experiencing disruption. Trains continue to run on other sections, but with delays and cancellations. This situation is further complicating travel for Parisians, who are already facing reduced service due to the strike scheduled for Thursday. In fact, even before this technical incident, SNCF had anticipated that traffic would be limited to two out of three trains for the whole day.
The operator estimates that traffic should gradually resume on the interrupted section by midday. However, this timeframe remains indicative, and may change depending on the progress of maintenance operations. In the meantime, passengers are advised to use alternative routes on other lines in the Paris region, or to postpone their journeys if possible.
For regular users of the RER E linking Haussmann-Saint-Lazare with Tournan-en-Brie and Chelles-Gournay, this double disruption (strike and technical incident) is seriously complicating the day's journeys. The line, used daily by hundreds of thousands of passengers, is a major link between eastern Paris and the Seine-et-Marne region, the heart of the capital and the La Défense business district.
It is advisable to consult the Île-de-France Mobilités website or the SNCF mobile app regularly to monitor the situation in real time and adapt your journeys accordingly. Other RER and metro lines are also experiencing disruptions due to the industrial action, requiring particular vigilance when planning journeys in and around the capital.
