The morning is shaping up to be challenging for commuters on RER B and D this Monday, January 26, 2026. An incident affecting a track at Gare du Nord is causing significant disruptions across these two key lines of the Île-de-France network. From 7 a.m., the SNCF warned travelers about major delays, train cancellations, and altered services on all routes. This situation is making commutes considerably more difficult for the thousands of Île-de-France residents who rely daily on these vital links connecting Paris to its northern and southern suburbs.
The technical issue at Gare du Nord, one of Europe's busiest stations, is causing a ripple effect across the entire train network. On RER B, the situation is particularly challenging: trains from line D are now forced to run on track 42, which is normally reserved for line B. "We’re running one train every two," warns the SNCF, significantly reducing service frequency for commuters. This decrease in frequency is leading to overcrowded platforms and trains, with longer wait times for travelers.
The situation remains challenging on the RER D. Traffic between Orry-la-Ville and Corbeil, as well as from Goussainville to Melun, is experiencing significant delays. Commuters should anticipate journey times being extended by up to 30 minutes. In addition to the delays, numerous trains are simply canceled, forcing travelers to adjust their plans and leave plenty of extra time for their work or personal trips.
The two main lines affected are the RER B, which notably connects Charles de Gaulle Airport to the city and serves several suburbs north and south of Paris, and the RER D, a key line running through the region from north to south. This dual disruption significantly hampers connections and alternative routes for travelers.
The SNCF has not announced a specific timeline for a full recovery. Technical teams are currently on-site working to resolve the issue affecting the tracks at Gare du Nord. Travelers are strongly advised to regularly check the official SNCF website and the SNCF Connect app for real-time updates on train services. Official social media accounts are also providing ongoing information throughout the day.
For commuters heading to Paris this morning, it's advisable to allow for significant delays and, if possible, to work remotely or reschedule appointments. The metro lines serving Gare du Nord, particularly lines 4 and 5, are expected to become crowded due to the surge of travelers seeking alternative routes. To avoid these inconveniences, consider using mobility apps that offer real-time alternative itineraries through Île-de-France Mobilités.
