(1) An election to authorize the annexation of territory contiguous to a public transportation benefit area may be called within the area to be annexed pursuant to resolution or petition in the following manner:
(a) By resolution of a public transportation benefit area authority when it determines that the best interests and general welfare of the public transportation benefit area would be served. The authority shall consider the question of areas to be annexed to the public transportation benefit area at least once every two years.
(b) By petition calling for such an election signed by at least four percent of the qualified voters residing within the area to be annexed and filed with the auditor of the county wherein the largest portion of the public transportation benefit area is located, and notice thereof shall be given to the authority. Upon receipt of such a petition, the auditor shall examine it and certify to the sufficiency of the signatures thereon.
(c) By resolution of a public transportation benefit area authority upon request of any city for annexation thereto.
(2) If the area proposed to be annexed is located within another county, the petition or resolution for annexation as set forth in subsection (1) of this section must be approved by the legislative authority of the county if the area is unincorporated or by the legislative authority of the city or town if the area is incorporated. Any annexation under this subsection must involve contiguous areas.
(3) The resolution or petition shall describe the boundaries of the area to be annexed. It shall require that there also be submitted to the electorate of the territory sought to be annexed a proposition authorizing the inclusion of the area within the public transportation benefit area and authorizing the imposition of such taxes authorized by law to be collected by the authority.