Work stoppages at North Rhine-Westphalia's two largest airports and on the railways also caused major problems for travelers and commuters on Thursday. A warning strike by security staff began at Düsseldorf Airport in the early hours of the morning, resulting in long queues and crowds in the terminal.
As a result of the unannounced strike, airlines canceled or rerouted a total of 13 flights. Meanwhile, the strike by the GDL train drivers' union also massively affected rail traffic.