Skidding.
—Failure to use wheel anti-skid chains on a slippery road or pavement is a fertile source of danger. Skidding may break a wheel or cause a collision with another car, or the car itself may slide off an embankment into the ditch. Sometimes, too, cars skid on loose gravel, or clods of earth, or even on slightly rough roads where a sufficient contact between wheel and ground is not obtained for a good grip.