“3S” stands for Speed, Stop, and Steering. Participants had better be proficient at all three if they hope to be competitive in this event segment. The 3S Challenge format is a side-by-side low-speed down and back course layout that features a 180-degree turnaround, slalom, and a stop box. Each “run” will be a total of the driver’s left side course time added to their right side course time, plus any accumulated penalties.  The winner is determined by the fastest combined left side and right side run.  All runs must be clean – any contact with course markers, cones, or stop box cones will result in a DNF.