1. The owners of property adjacent to a transportation district formed under the Missouri transportation development district act may petition the court by unanimous petition to add their property to the district. If the property owners within the transportation development district unanimously approve of the addition of property, the adjacent properties in the petition shall be added to the district. Any property added under this section shall be subject to all projects, taxes, and special assessments in effect as of the date of the court order adding the property to the district. The owners of the added property shall be allowed to vote at the next election scheduled for the district to fill vacancies on the board and on any other question submitted to them by the board under this chapter. The owners of property added under this section shall have one vote per acre in the same manner as provided in subdivision (2) of subsection 2 of section 238.220.

2. The owners of all of the property located in a transportation development district formed under this chapter may, by unanimous petition filed with the board of directors of the district, remove any property from the district, so long as such removal will not materially affect any obligations of the district.