5.3 Number & Display Regulations

C. A racer must participate in 3 or more race weekends of the MRA season events
in order to reserve their number for the next season. If they do not participate in
3 or more weekends, their number is considered open and will be given out on
a first come, first served basis the following year. The racer may file a request
with the board to have their number retained for the next season.