HALIFAX -- Four people, including two children, were sent to hospital Monday after a tractor-trailer collided with a minivan in Dartmouth.

Halifax Regional Police responded to the two-vehicle collision in the westbound lane of Highway 111 around 12:50 p.m.

The occupants of the minivan -- a 33-year-old woman, a 27-year-old woman, and two one-year-old children -- were taken to hospital with non-life-threatening injuries.

Police said late Monday afternoon that one woman remained in hospital.

The truck driver wasn’t injured.

Traffic was redirected to Burnside Drive until the roadway was cleared.

Police say the collision is under investigation, but the highway was snow-covered and slippery at the time.