Travelers on the RER C face two simultaneous disruptions this Tuesday, October 20, 2026. Since the morning, trains have not been running between Saint-Quentin-en-Yvelines and Viroflay Rive Gauche, in both directions. The cause: an issue with the rail tracks, reported in the Meudon Val Fleury area, in the Hauts-de-Seine. According to information from SNCF, service could resume around 14h, depending on how the situation develops.
This service disruption primarily affects travellers using the western branch of the RER C to reach Paris from the Yvelines. Journeys between Saint-Quentin-en-Yvelines, Versailles and Viroflay are especially affected, forcing riders to seek alternative routes.
Disruptions extend beyond this stretch of the line. An immobilized train near Saint-Michel Notre-Dame station, in the heart of Paris, is also causing slowdowns and disruptions across the RER C. Technical checks are underway on the affected carriage. This second breakdown further complicates travel, including on branches not directly affected by the interruption between Saint-Quentin-en-Yvelines and Viroflay.
For travelers, it’s wise to allow for extra travel time and to check the next departures before heading to the station. The connections with other transit lines can offer a solution depending on the destination.
The 2:00 p.m. timetable remains an estimate and does not guarantee a return to normal service. To monitor traffic developments and plan an alternative route, passengers can consult the latest information on Transilien or Île-de-France Mobilités.
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