Rules

PHA events are operated under the PHA Supplementary Regulations, as defined in the following document:

2024 PHA Supplementary Regulations

The PHA Supplementary Regulations document also defines the required safety equipment for cars and drivers.

Car preparation rules are defined in the following documents:

  • GCR classes are defined in the current SCCA General Competiton Ruleboook.
  • The Solo Street Modified class is defined in the current SCCA Solo Rules.
  • The Solo Street Prepared classes are frozen at the 2022 Solo Rules as of the 2023 season.
  • PHA Supplemental classes are defined in the PHA Supplementary Regulations Document linked above.