The phenomenon of "lane transition" occurs when balls remove oil from the lane as they pass, and deposit some of that oil on originally dry parts of the lane. The process of oil removal, commonly called "breakdown," forms dry paths that subsequently cause balls to experience increased friction and to hook sooner. Conversely, the process of oil deposition, commonly called "carry down," occurs when balls form oil tracks in formerly dry areas, tracks that subsequently cause balls to experience less friction and delayed hook. Balls tend to "roll out" (hook sooner but hook less) in response to breakdown, and, conversely, tend to skid longer (and hook later) in response to carry down—both resulting in light hits. Breakdown is influenced by the oil absorption characteristics and rev rates of the balls that were previously rolled, and carry down is mitigated by modern balls having substantial track flare.