It happened around 9 a.m. in the 6200 block.
Chattanooga Police say a man driving this truck pulled out in front of this minivan.
A woman and two children were inside the minivan.
Officers say the man may have had a medical condition or may have been trying to make a u-turn; they’re not sure.
Tim McFarland, with the Chattanooga Police Department, says, "The minivan was traveling south on Highway 58 behind me, and for whatever reasons, the truck turned into oncoming traffic, obviously turned into the van, and that’s how the collision occurred."
The woman and children were not seriously injured.
Police say properly installed car seats saved the children’s lives.
The man driving the other vehicle is at a local hospital.