Track Limits – the track limit or designated race track is determined by LOORRS as the only area that can be raced on, usually laid out between two or more of the following items, K-rail, fencing, banners, bright colored cones, dirt wall or dirt furrow, sometimes referred to as the racing surface.
Competitive racing surface - defined as the area within the track limit that a race competitive speed can be maintained. One example would be, a turn may have a track limit of 80 feet wide but late in the race the competitive racing surface may only be about 40 feet wide, because the dirt beyond the cushion becomes too deep or too soft that a competitive speed cannot be maintained.
Cushion – the inside edge of loose dirt that gets pushed and or built up, usually to the outside of a turn.
Heavy contact – when one race vehicle contacts another race vehicle with enough momentum and or force, that the other race vehicle is significantly displaced from its current position, path, trajectory and or significantly breaks its momentum.
Light contact - when one race vehicle contacts another race vehicle with very low momentum and or force, as not to significantly displace the other race vehicle from its current position, path, trajectory and or significantly breaks its momentum.
Defensive move – a race vehicle intentionally moving left or right in order to block or reduce the momentum of another race vehicle.
Incidental contact - contact that is believed to be unplanned or unintended, sometimes in conjunction with something else. One example would be but not limited to, two race vehicles racing side by side through a turn, the vehicle on the inside hooks a rut that puts it up on two wheels and instinctively turns outward in order to regain control, in the process of doing so it contacts the vehicle on the outside of the turn.
Holding your line – a race vehicle maintaining its course, path or trajectory. (Following the arc or radius of a turn within the track limits).
Not holding your line – a race vehicle not maintaining its course, path or trajectory.