"...truck overturned..", "....A third big rig, heading westbound, swerved to avoid the collision....". So total 2 cars, the truck overturned, the collision should be between two cars.
"...truck overturned..", "....A third big rig, heading westbound, swerved to avoid the collision....". So total 2 cars, the truck overturned, the collision should be between two cars.