What's the current traffic situation on the RER B? Here's real-time information on current and future disruptions on this public transport line in the RATP-SNCF network.
Linking the north and south of theParis region over an 80-kilometer route, the RER B opened in 1977 and today serves 47 stops, connecting residential and business areas across various départements. To the north, it departs fromCharles de Gaulle airport and Mitry-Claye in Seine-et-Marne, passing through Seine-Saint-Denis with key stops such as Aulnay-sous-Bois. Heading south, it reaches Saint-Rémy-lès-Chevreuse in the Yvelines to take us to the sublime Vallée de Chevreuse, crossing theEssonne with stops including Orsay and Bures-sur-Yvette.
In Paris, the RER B crosses several central arrondissements, offering direct access to points of interest such as the Latin Quarter and Jardin du Luxembourg in the 5th arrondissement, and the famous Parc Montsouris in the 14th. It also connects with the Stade de France in Saint-Denis, and the Villepinte exhibition center. The line also offers multiple connections with other RER lines(A, C, D, E) and several metro lines(4, 6, 10, 14).
If you're a regular user of this line in the RATP-SNCF network, here's where we share real-time information on traffic on the RER B public transport network in the Paris region. Whether it's work in progress, station closures, strikes orunforeseen incidents, we'll give you the lowdown on current and future disruptions on the RER B in Paris and the Ile-de-France region.
- Line B: Paris Nord - CDG2/Mitry from 28 to 30/04 :
Period: Monday to Friday, from 10:45pmDates: April 28, 29 and 30, 2025
Traffic will be interrupted between Paris Gare du Nord and Aéroport CDG2 / Mitry-Claye.
A replacement bus service will be provided to intermediate stations.
For further information, visit the RER B website.
Reason: works
- Line B: Châtelet - CDG2/Mitry from 03/31 to 04/25 :
Period: Monday to Friday, from 10:45pmDates: March 31 to April 25, 2025, except April 18 and 21, 2025
Traffic will be interrupted between Châtelet-les-Halles and Aéroport CDG2-TGV / Mitry-Claye.
A replacement bus service will be provided, serving intermediate stations.
For further information, visit the RER B website.
Reason : works
- Line B: Aulnay - CDG2 Airport, May 03 and 04:
Period: all day
Dates: Saturday 03 and Sunday 04 May 2025
Traffic will be interrupted between Aulnay-sous-Bois and Aéroport CDG2-TGV. A replacement bus service will be provided to intermediate stations.
For more information, visit the RER B website.
Reason : works - Line B: Interconnection failure from 19 to 21/04 :
Period: all day
Dates: the weekend of April 19-20 and Monday April 21, 2025
The interconnection will be suspended at Paris Nord. To continue your journey, you will need to change trains between underground and surface tracks.
Trains to CDG2 Airport and Mitry-Claye will depart from the surface tracks, tracks 32 and 33. Trains to Robinson and Saint-Rémy-lès-Chevreuse will leave from the underground tracks, track 44. Please note that traffic will be interrupted between Aulnay-sous-Bois and Aéroport Charles de Gaulle 2-TGV from April 19 to 21. To get to Charles de Gaulle 1 or 2 airport, please go to Mitry-Claye station, where you can take a direct bus to the airport. To reach the stations between Sevran-Beaudottes and Aéroport Charles de Gaulle 1, buses leave from Aulnay-sous-Bois (omnibus). For further information, visit the RER B website.
Reason: roadworks
- Line B: Aulnay - CDG2 Airport, from 19 to 21/04 :
Period: all day
Dates: the weekend of April 19-20 and Monday April 21, 2025
Traffic will be interrupted between Aulnay-sous-Bois and Aéroport CDG2-TGV. A replacement bus service will be provided to intermediate stations.
Please note that due to work on the cathedral bridge, a change of train will be necessary at Gare du Nord between the underground and surface tracks. For further information, visit the RER B website.
Reason : works
- Line B: schedule changes during school vacations:
Period: all dayDate: April 12 to 27Line B timetables change during school vacations. Plan your journey on these dates on the Ile de France Mobilités website or application, the Ratp.fr and Transilien.com websites, the Bonjour RATP and SNCF Connect applications or your mobility application. Find timetables on the RER B website: maligneb.frReason: Change of timetable during school vacations.
- Line B: Paris Nord - CDG2/Mitry from 05 to 28/05 :
Period: Monday to Friday, from 10:45 pm
Dates: May 05 to 28, except May 08Traffic is interrupted between Paris Nord and Aéroport Charles de Gaulle 2-TGV / Mitry-Claye. A replacement bus service will be provided to intermediate stations.
For further information, visit the RER B website.
This page may contain AI-assisted elements, more information here.
