If both drivers break out, the one who runs closest to his or her dial is the winner. A burnout precedes every run. Also called the Tree, it is the noticeable electronic starting device between the lanes on the starting line. It displays a calibrated-light countdown for each driver. In that position, a driver is closer to the finish line but dangerously close to a foul start.
Drivers select a dial-under, or e.t.
The breakout rule is in effect. Also called e.t. After qualifying, vehicles race two at a time, resulting in one winner from each pair. Winners continue in tournament-style competition until one remains. A perfect reaction time on a full Tree is .500.