“Ambulance operator” shall mean any person who for any monetary or other consideration, or as an incident to any other occupation, transports in one or more ambulances one or more persons from any location within the corporate limits of the city to any hospital or other place giving first aid or medical treatment, regardless of the location of such hospital or other place. “Ambulance operator” shall not include a person who maintains ambulances for the use of his own employees in connection with the operation by such person of a plant hospital or first aid station for such employees. (Ord. 505 § 3. 2002 Code § 6-8.1).