Arizona POST Waiver Practice Test

A skip skid happens when a wheel locks during braking and the tire stops rolling, then bounces against the road as the contact patch loses and regains grip. Because the tire isn’t rotating, it can ride on its tread and rebound off the surface, causing a rapid series of hops or “skips.” This loss of rolling traction also makes steering less effective, since a rolling tire is what helps the vehicle respond to input during braking. Hydroplaning, in contrast, is when a layer of water separates the tire from the road, reducing traction without the hopping action. An acceleration skid occurs when tires spin from sudden throttle, not during braking. Sliding on ice is a general low-traction situation where the tires slide rather than bounce. So the described scenario—a locked tire bouncing on the surface—best fits a skip skid.