The incident, detected early on the morning of January 7, 2026, directly affects the section connecting northern Barcelona with the Vallès Occidental region and other key points of the network. The disruption quickly caused mobility chaos for regular commuters.
According to Renfe, the lack of circulation between these two stations has caused accumulated delays across the entire R4 line to potentially exceed half an hour in both directions. Technicians are currently working to resolve the signaling failure as quickly as possible.
The signaling incident has forced the implementation of an alternative road service to minimize disruption to travelers.
The R4 line is one of the most heavily used lines in the Rodalies de Catalunya network, connecting major towns such as Manresa, Terrassa, and Sabadell with the Catalan capital. Travelers are advised to seek alternative routes or check official information channels before starting their journey.
