As used in this chapter, the following definitions apply:
(a) “District” means the San Francisco Bay Area Rapid Transit District, including all operations and extensions of its transportation system, regardless of modality or vehicle type, and excluding all temporary bus lines.
(b) “Employee organization” means an organization that includes employees of the district that has as one of its primary purposes representing those employees in their relations with the district. “Employee organization” shall also include any person of the organization authorized to act on its behalf.
(c) “Exclusive representative” means an accredited employee organization recognized or certified as the exclusive negotiating representative of employees in an appropriate unit within the district.