Two people are fighting for their life after a collision on Grange Mill Lane last night.
The 44-year-old man and the 28-year old woman were travelling in a yellow Renault Megane along Grange Mill Lane from Meadowhall towards Ecclesfield.
The police believe the car hit a wall before colliding with a white HGV lorry parked on the side of the road.
The two have been taken to hospital with life-threatening injuries.
South Yorkshire Police are looking for witnesses. If you have any information please call 101.