[frithguild]

Rollover accidents are the most damaging to occupants. A three point belt does not prevent flail - whipping side to side as the vehicle rolls. Occupants heads impact the B pillats, windows and each other.

Don't you think there is a reason race cars are equipped with five point systems?

[RightWhale]

Car occupants could wear helmets. That ought to reduce serious injuries considerably. Full harnesses would help, but that would be a hard sell among some. I wouldn't mind, but the gf is NOT going to be interested.

[Paladin2]

And Helmets. Don't leave home without one.

[eno_]

Quite true! A rolling vehicle tries VERY hard to fling everything inside it out, including all the occupants, their heads, limbs, etc. Not pretty.