Passengers on a packed subway platform at Alexanderplatz station in Berlin on Nov. 16.Photographer: Fabian Sommer/picture alliance/Getty Images

German rail travelers are facing massive disruption from a 20-hour strike by train drivers that began late Wednesday and is due to continue until 6 p.m. local time on Thursday.

Deutsche Bahn AG warned that millions of passengers will be affected and urged people to avoid unnecessary journeys or postpone travel plans.

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Germany Faces Severe Rail Disruption From Train Drivers Strike

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