Md. Code, Bus. Reg. § 11-522

(a) In this section, “Arabian breed horse” means a horse that: (1) is a purebred Arabian breed horse; and (2) has a valid certificate of registry with the Arabian Jockey Club of America. (b) A licensee at Pimlico Race Course may conduct live racing of Arabian breed horses if: (1) no more than one Arabian breed race is conducted per day; (2) no more than three Arabian breed races are conducted during a race meet; (3) an Arabian breed race is conducted in addition to, and not in place of, an existing thoroughbred race; (4) an Arabian breed race does not reduce the number of thoroughbred races conducted by the licensee per racing day; (5) the purse for an Arabian breed race is: (i) not funded by the thoroughbred purse account; and (ii) funded by the licensee or the sponsor of the Arabian horse race; (6) the takeout provisions of §§ 11–514 and 11–515 of this subtitle are applied to the race; (7) the licensee pays all taxes and fees associated with the Arabian breed race that would otherwise be due on a thoroughbred race; and (8) the Arabian breed race is approved by the State Racing Commission.