In case of interference, collision or violation of any of the previous restrictions, whether occurring before or after the start, the Judges may place the offending horse back one or more positions in that heat or race. In the event the collision or interference prevents a horse from finishing the heat or race, the offending horse may be disqualified from receiving any winnings and the driver may be penalized. In the event a horse is set back under its provision, the offending horse must be placed behind the horse with which it interfered and did not finish.
7 Pa. Code § 205.404