RER B: traffic partially interrupted for 24 hours at the end of September

Published by Caroline de Sortiraparis · Photos by Cécile de Sortiraparis · Published on September 9, 2023 at 08:52 a.m.
RER B commuters are going to have to adapt. RATP has announced that traffic on this famous RER line will be interrupted on Saturday September 30, 2023, between Fontaine-Michalon and Massy-Palaiseau stations. We tell you all about it.

Come the weekend, many Parisians and Ile-de-France residents take the opportunity to clear their minds and discover new exhibitions, great walks andimmersive experiences. But public transport has to work properly.

Unfortunately, for users of the RER B, the situation will not be easy at the end of September. Due to planned work on the RER C, involving work on RER line B, traffic will be partially interrupted on this famous RER line, more precisely between the Fontaine-Michalon and Massy-Palaiseau stations , in both directions and for an entire day. In detail, the closure will take place on Saturday September 30, 2023.

In concrete terms, RER B trains will not stop at Les Baconnets and Massy-Verrières stations. As a result, Fontaine-Michalon station will become the temporary terminus for commuters from Paris. Conversely, Massy-Palaiseau station will be the temporary terminus for passengers arriving from Saint-Rémy-lès-Chevreuse.

RER B : trafic interrompu pendant 24h fin septembreRER B : trafic interrompu pendant 24h fin septembreRER B : trafic interrompu pendant 24h fin septembreRER B : trafic interrompu pendant 24h fin septembre

RATP specifies that replacement buses will be provided between Fontaine-Michalon and Massy-Palaiseau stations. These will run in both directions throughout the day on September 30, 2023. Another option? Bus 119 between Les Baconnets and Massy-Palaiseau stations. Alternatively, you can board the RER C at Massy-Palaiseau station.

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Practical information

Dates and Opening Time
On September 30, 2023

× Approximate opening times: to confirm opening times, please contact the establishment.

    Official website
    www.ratp.fr

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