Train Problems Cause State Issues.

A computer problem caused major train delays in Germany. Train services were disrupted nationwide. Authorities are investigating the cause of the disruption.
On Tuesday evening, a computer problem affected digital train radio in Germany. This caused trains to stop across the country. Deutsche Bahn described the situation as unprecedented. Austrian Railways noted that a similar radio failure is rare for them. The disruption is impacting travel and potentially the national economy.
Summarized from the sources above. Read the originals for the full story.
Highlights
Nationwide Train Disruptions
A nationwide disruption to train services in Germany is being investigated.
Radio Failure Cause
A computer problem caused a radio failure, stopping trains across Germany.
Deutsche Bahn's Assessment
Deutsche Bahn calls the situation unprecedented and is investigating the cause.
Economic Impact Concerns
The disruption is more than a railway problem, impacting national transport.
Austrian Rail Differences
A radio failure is ‘extremely unlikely’ in Austria due to technology.