The Minnesota Autosports Club has our own set of competition rules that we abide to. They are updated annually and define the rules for our autocross competition events. These competition rules refer to the SCCA Solo rules for classing and safety details. MAC also has its own club bylaws.
For indexed classes, we use the PAX/RTP Index developed by Rick Ruth. These calculations are updated annually based on results from regional and national events from around the US.
2024 Minnesota Autosports Club Rulebook