Transport strike on September 29: disruptions expected on the RER and Transilien networks

Published by Caroline de Sortiraparis · Photos by Caroline de Sortiraparis · Updated on September 27, 2026 at 07:02 p.m.
Due to the national interprofessional strike planned for Tuesday, September 29, 2026, some disruptions are expected in the Paris and Île-de-France public transport network, notably on several RER and Transilien lines. More details to come.

This week is shaping up to be eventful in France. While a strike in the public sector is planned for this Tuesday, September 29, 2026, the Paris and Île-de-France public transport networks will also be affected by the national walkout. In a press release published on September 22, the CGT-RATP announced it had filed an unlimited strike notice. The railway union had thus urged all company employees to stop work starting this Monday, September 28, 2026 at 7 p.m.

Since then, we know a bit more about the scale of the protest and it is expected to have a limited impact on Île-de-France’s public transport. According to a RATP spokesperson who spoke to AFP, traffic will be "normal" in the metro and on the RER lines operated by the Régie autonome des transports parisiens, namely the RER A and RER B.

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By contrast, disruptions are expected on two Transilien lines, but also on the RER C, RER D and RER E; these are RER lines operated by SNCF.

In detail, service will be "disrupted" on the RER C and the RER E, and "heavily disrupted" on the RER D.

Transilien SNCF also warns that traffic will be "perturbed" on line V and "heavily disrupted" on the line R. On the remaining Transilien lines, service is expected to be "normal." Note that line-by-line traffic forecasts will be detailed this Monday, September 28, starting at 5 p.m.

RER and Transilien lines affected by the September 29 strike

  • RER C: Traffic on the line disrupted

  • RER D: Traffic on the line severely disrupted

  • RER E: Traffic on the line disrupted

  • Transilien Line R: Traffic on the line severely disrupted

  • Transilien Line V: Traffic on the line disrupted

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The public sector strike on Tuesday, September 29, 2026 is rallying teachers, healthcare workers, and firefighters across Paris and the country, with a demonstration anticipated in Île-de-France’s eastern stretch and an open-ended strike mandate at the RATP. A day of widespread disruption looms—here’s what you need to know. [Read more]

Practical information

Official website
www.transilien.com

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