A problem with a communications system forced Germany’s railway system to halt all trains late Tuesday, leaving passengers stranded across the country. The main national railway operator, Deutsche Bahn, said all trains were being held at stations because of a nationwide problem with the GSM-R digital communication system, which is used for internal communication on the railway network. Deutsche Bahn said in a statement at midnight, 1½ hours after it first announced the problem, that the cause...
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