A three-car crash in North Hollywood Tuesday morning ended with one vehicle on top of another and a second on its roof.

None of the six people assessed at the scene appeared to have suffered critical injuries in the 6:40 a.m. crash at the intersection of Vineland Avenue and Vanowen Street, said Margaret Stewart of the Los Angeles Fire Department.

A Metrolink train was stopped on nearby tracks as crews tended to the victims and a railroad crossing signal was down in traffic lanes.

One of the vehicles required “a quick door pop” to free a person, Stewart said.