Occupants thrown from a vehicle in a rollover crash are often run over by the vehicle itself or hurled against a fixed object. Sometimes, unbelted occupants are only partially ejected and subsequently crushed by the vehicle as it rolls. The three systems that control your vehicle, braking, steering, and acceleration, all do their work at the four places where your tires meet the road. Sometimes, more is asked of these systems than they can provide and the vehicle starts to skid. This may lead to loss of control and a crash.
Drivers can avoid most skids by driving responsibly for the conditions that exist.
There are three types of skids that correspond to the three control systems. In a braking skid, the wheels are not rolling. In a steering or cornering skid, the tires slip and lose cornering force because of too much speed or over steering in a curve. And, in an acceleration skid, the drive wheels start to spin because of too much acceleration. Cornering and acceleration skids are best handled by easing off the accelerator.