Okla. Admin. Code § 325:10-1-25
Subject to the approval of the Commission, the organization shall provide the services of a properly equipped ambulance vehicle, at least one driver, and at least one attendant at a level equal to or greater than EMT/Intermediate as defined by the Oklahoma Emergency Response Systems Act and the Emergency Medical Services Regulations promulgated by the Oklahoma State Board of Health at all times during the running of a race program at its meeting and during the hours the organization permits the use of its race course for training purposes. The ambulance vehicle shall be properly equipped pursuant to the Oklahoma Emergency Response Systems Act and the Emergency Medical Services Regulations promulgated by the Oklahoma State Board of Health. The organization shall also provide the service of a horse ambulance during the same hours. A means of communication shall be provided by the organization between a staffed observation point (Stewards' Tower and Clocker's Stand) for the race course and the place where the required ambulances and their attendants are posted for prompt response in the event of accident to any person or horse. In the event an emergency necessitates the departure of an ambulance, the race course shall be closed until an ambulance is again available within the enclosure.
Okla. Admin. Code § 325:10-1-25