Constitution of the State of Georgia Art. IV, § 4, ¶ I

(a) There shall be a State Transportation Board composed of as many members as there are congressional districts in the state. The member of the board from each congressional district shall be elected by a majority vote of the members of the House of Representatives and Senate whose respective districts are embraced or partly embraced within such congressional district meeting in caucus. The members of the board in office on June 30, 1983, shall serve out the remainder of their respective terms. The General Assembly shall provide by law the procedure for the election of members and for filling vacancies on the board. Members shall serve for terms of five years and until their successors are elected and qualified.

(b) The State Transportation Board shall select a commissioner of transportation, who shall be the chief executive officer of the Department of Transportation and who shall have such powers and duties as provided by law.