According to the company, the replacement schedule of Deutsche Bahn started stable on Monday morning after the start of the nationwide train drivers' strike.
“Despite the reliable basic offer, DB cannot guarantee that all travelers will get to their destination as desired,” said Deutsche Bahn in its press blog.
If possible, people should postpone their train journeys until after the strike.
On Monday night, the German Locomotive Drivers' Union (GDL) expanded its strike, which had been going on since Saturday afternoon, from freight to passenger transport as planned.
By Wednesday morning, 2 a.m., millions of travelers have to be prepared for massive restrictions, especially in long-distance traffic.
As the Deutsche Bahn announced in Leipzig, Saxony, Saxony-Anhalt and Thuringia are particularly affected by the labor dispute.
According to railway information, around 25 percent of trains run nationwide in long-distance and 40 percent in regional traffic.
Because experience has shown that the eastern countries would be hit harder, the failures there could be higher, it said.
No right to strike for civil service train drivers
In the federal states in the east, the GDL is traditionally more powerful, because in the west some of the members are still civil servants from the Bundesbahn era and are not allowed to strike.
Around a quarter of the long-distance trains should run according to the train.
There should be a train every two hours, especially on some of the main axes.
The train spokeswoman said that nothing was known about large gatherings of waiting travelers in the train stations on Monday morning.
The railway wants to keep the connections of the replacement timetable as punctually as possible.
Before starting their journey, travelers should find out whether the trains are actually running on the bahn.de website.