On the morning of [Date of incident, implied to be recent], Deutsche Bahn experienced a significant operational disruption on the RB40 route from Munich to Mühldorf am Inn in Upper Bavaria. At 5:22 AM, train personnel received a mobile notification detailing a signal box malfunction in Schwindegg. The alert indicated that the dispatcher (FDL) was unable to operate signals, necessitating that all train movements proceed only upon direct command. This critical failure narrowly averted a potential catastrophe by highlighting the immediate need for manual control over train operations, underscoring the fragility of the signaling system.