BERLIN (AP) — Germany's railway was running largely as normal Wednesday after a late-night communication system outage left trains and travelers stranded around the country, but the main rail operator faced criticism and questions over the chaos.

Trains were halted abruptly across Germany late Tuesday because of a problem with the GSM-R digital communication system used for internal communication on the railway network. Service resumed after about two hours, during which long lines formed at information desks.

The Associated Press