Overview
- A fatal 'accident de personne' on RER C at Vitry-sur-Seine left a damaged train blocking the tracks and caused line-wide disruption that stretched into the afternoon.
- A theft of copper cables at Bailleul on Tuesday knocked out signalling between Lille and Hazebrouck, forcing heavy delays, partial service and bus substitutions during the morning rush.
- A signalling failure at Gare du Nord that began Tuesday afternoon disrupted RER B services, affected shared RER D traffic and led to at least three cancelled Eurostar departures.
- Passengers faced long delays, cancelled trains and replacement buses on the school and work return day as technical teams carried out on-site repairs and SNCF deployed manual procedures to restart traffic.
- The incidents highlight recurring cable thefts in the Bailleul area and the network’s dependence on a few critical nodes, which means single-site failures can cascade across regional and international services while police and maintenance crews investigate and repair damage.