Trains stopped in Germany on Tuesday night. Almost all trains stood still for 2 hours. This affected many trains. Local trains also stopped. People waited at the train stations.
The cause was a radio error. The system is called GSM-R. It helps drivers speak to the control room. Trains must stop without this radio for safety. Experts fixed the error at night. A back-up system helped.
Trains moved again at 0.30 am. There were delays in the morning. The train company gave vouchers for taxis and hotels. All hotels were full in Frankfurt am Main.
Politicians criticize the train company. They want a clear explanation. Experts do not think it was an attack. They think a computer update caused the error. Trains worked well in Austria and Switzerland.
