A 51-year-old driver was seriously injured when her car collided with a truck on the A2 motorway.
Although the car rolled over several times, two nine-year-old children got away with minor injuries.
The police in Hanover announced on Wednesday.
The accident occurred near Bad Nenndorf.
The woman drove in the middle lane, came off to the right for an unexplained cause and drove sideways against the truck.
Hanover - The 51-year-old and the children were taken to a hospital.
Because of the salvage work, the A2 towards Berlin was closed for several hours.
dpa