Two trains collide in Denmark, with four people being critically injured. Egetved is the mayor of Gribskov and said that those with critical injuries were flown to the National Hospital, Copenhagen. She wrote on Facebook that the local track was used by many Gribskov workers, students and residents. Rail accidents are rare in Denmark. One expert suggested that the train driver had overridden a stop sign as the train left the local station. The Gribskov Line is not believed to have an automated safety system. Trine Egetved, a public broadcaster DR, said that it was shocking that the two trains could collide.