Defensive Driving is something like driving with common sense.
People can be tought by giving a simple presentation in which points can be stressed up like if one is going out that your father advices
Observe speed limit
dont be engaged by other driver
if someone honks let him pass
if you see a fast driver coming give him way DO not speed up.
use indicators while turning
over see what is coming
maintaining safe distance from vehicles in front
no frequent lane changes.
ETC list can go on and on.
AND A rollover is some extreme case scenario driver must be over speeding and attempting what is beyond his and his vehicles capacity..