RER E Works: Disruptions Scheduled for October and November 2026

The RER E line's work schedule for October and November 2026 has been released, impacting several sections and requiring replacement bus services.

Generic image of an empty RER E platform in Île-de-France, with tracks curving into the distance under a station canopy, soft daylight.
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Generic image of an empty RER E platform in Île-de-France, with tracks curving into the distance under a station canopy, soft daylight.

The RER E will experience significant disruptions in October and November 2026 due to planned works on several sections, leading to traffic interruptions and the implementation of replacement bus services.

The bi-monthly schedule for the RER E for October and November 2026 has been published, detailing the works that will affect passenger journeys. It is advisable to check information on transilien.com or via the Île-de-France Mobilités app to prepare for your travel.
Between Saturday, September 26th, and Sunday, November 1st, on weekends, no trains will run between Villiers-sur-Marne and Tournan. Replacement buses will be in operation throughout this period between Tournan / Roissy-en-Brie and Villiers-sur-Marne. On October 10th and 11th, these buses will also serve between Noisy-le-Grand–Mont d’Est / Tournan and Nogent–Le Perreux / Villiers-sur-Marne.
From Monday, October 5th, to Wednesday, October 14th, on weekdays and starting from 10:30 PM, traffic will be interrupted between Nanterre-la-Folie and Chelles – Gournay. Buses will provide connections to all stations, linking Bobigny – Pablo Picasso (metro 5) to Chelles – Gournay, and Chelles – Gournay to Paris Est.
On the weekend of October 10th and 11th, trains between Nanterre-la-Folie and Villiers-sur-Marne will depart from and arrive at Nogent – Le Perreux. Buses will replace trains between Nogent – Le Perreux and Villiers-sur-Marne, as well as between Noisy-le-Grand Mont d’Est and Roissy-en-Brie / Tournan.
From Monday, October 19th, to Friday, October 23rd, between 9 AM and 4 PM, one in two trains will run between Nanterre-la-Folie and Chelles – Gournay.
Throughout the year, late in the evening and on certain weekends, replacement buses are also scheduled. Specific times for the last trains and first replacement buses vary by period. The locations of replacement bus stops, such as at Villiers-sur-Marne, are specified to assist travelers.
Based on information from the official source: Transilien – RER E et T4 (01/10/2026)