[oldE]

Single vehicle roll-overs where they don't leave the road surface are hard to fathom, but they happen more often than they should.

I came across a first generation Chrysler LS on its roof on the centre line one day and from the marks it was easy to see what happened.
On a straight stretch of road, the driver managed to drop a wheel off the right side of the pavement (there was a 2 ft. paved shoulder), yanked the wheel to the left and the car responded and shot across her lane and the other before she overcorrected. Thankfully there wasn't anyone coming the other way.
She just touched the gravel on the other side before her second correction took effect which headed the car back toward the right. Due to the rapid course corrections, the car had rolled on its suspension and the left side tires had enough traction to act as a fulcrum and up and over it went, still skidding along on its roof for a few yards.

Conditions: dry pavement, mid day light traffic, open fields on either side of a limited access two lane road. Driver innattention and inappropriate control input.

Be careful out there.
Best
Les