California Code, Business and Professions Code - BPC § 19410.5

(a) The “inclosure-restricted” is that part of the inclosure that is enclosed by a wall, fence, or other physical barrier, where admission is obtained only upon the presentation of authorized credentials.

(b) The “inclosure-public” means all other areas of the inclosure designated by a racing association, fair, or simulcast wagering facility and approved by the board to which the public is admitted for the purpose of wagering on horseraces.