The Lisbon Metro (ML) has expressed regret for disruptions experienced by passengers in recent days, attributing the issues to signal system malfunctions. In a statement, the company acknowledged the inconvenience caused and assured customers of ongoing efforts to minimize such occurrences. The ML is currently undergoing a major investment program, including a complete replacement of its outdated signaling system. The project aims to enhance reliability, reduce wait times, and enable faster response to breakdowns. The company expects to fully implement the new system in the first quarter of 2025.