Overview
- A power supply failure between Choisy‑le‑Roi and Juvisy forced the RER C to halt all service on Friday, May 22, after people were reported on the tracks.
- The stoppage caused heavy knock‑on delays at Paris Gare d'Austerlitz, with departing trains logging roughly 1 hour 20 minutes to 5 hours 30 minutes of delay on Friday evening.
- Operators also dealt with separate incidents—a reported unidentified noise on a TER at Athis‑Mons and a catenary break near Nîmes—that disrupted south‑east and regional axes.
- By Saturday morning SNCF said traffic from Gare d'Austerlitz and the Paris–South‑East axis was largely back to normal, though residual RER C disruption persisted between Massy‑Palaiseau and Montigny‑Beauchamp.
- SNCF Réseau and train operators used contingency measures such as replacement buses and cancelled planned night works to speed recovery, and pre‑scheduled Pentecost engineering closures continued to limit alternatives for commuters.