The rule states:

Drivers agree to not race in any competing series event on the same day as the scheduled USAC series event (series meaning, silver crown, sprint, and midget). In addition, driver agrees not to participate in a competing event (non-USAC) within 24 hours and 200 miles of a scheduled USAC event at a track that does not conduct atleast 1 scheduled USAC event during the calender year.