Great Lakes Solo Series website
Professional Autocross Index (PAX)
The NWR Solo program uses the PAX quite extensively in the classes that compete in our regional events. PAX is a index system designed to equalize participants running cars from different SCCA Solo classes in the same local regional class. The PAX value is a multiplier used on the entrant’s time, and then compared directly with other class competitors and their PAX multiplied time.
The Official PAX values are determined each year