Homologation rules in motorsport are regulations set by governing bodies in order to ensure fair and competitive racing. These regulations are designed to control the performance of vehicles used in competition and to require manufacturers to create an affordable road version of the competition car. The regulations also require that the competition vehicle be based off of the road version and not just a racing prototype. This is done to make sure that the competition vehicle is available to the public and that any improvements made to the vehicle are made available to the public as well. Ultimately, homologation rules in motorsport ensure that motorsport competitions are fair, competitive, and open to the public.