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.
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