7 Pa. Code § 205.402
All complaints by drivers of any foul driving or other misconduct during the race must be made at the termination of the race unless the driver is prevented from doing so by an accident or injury. A driver who wishes to enter a claim of foul or other complaint relating to the running of the race must, before dismounting, inform the Judges of the driver's intent to enter the claim or complaint and immediately proceed to the appropriate telephone or Judges' stand where the claim or complaint shall be immediately entered. The Presiding Judge shall not cause the "official" sign to be displayed until the driver's claim or complaint shall have been entered and considered. No appeal to the Commission shall be heard based on the Presiding Judge's "no-call."
7 Pa. Code § 205.402