Oregon Revised Statutes Public Health and Safety § 462.040

(a) Licenses for horse and mule race meets (Class A).

(b) Licenses for greyhound race meets (Class B).

(2)(a) Except as the commission otherwise may provide by rule, no licensee shall be granted licenses of both classes nor shall licenses be issued for more than one class of racing on the same race course, track or location.

(b) In adopting rules to carry out the provisions of this subsection, the commission shall consider, among other matters, the impact on existing race meet licensees in the county in which application for a license referred to in paragraph (a) of this subsection is made.