(a) Responsible public entities that proceed with procurement pursuant to competitive sealed bidding pursuant to Code Section 50-5-67, or any other purchasing options available to them under current law, shall not be required to comply with this chapter.
(b) Nothing in this chapter shall apply to or affect the State Trans-
portation Board, the Department of Transportation, or the State Road and Tollway Authority, or any project thereof.
(c) Nothing in this chapter shall abrogate the obligations of a responsible public entity or private entity to comply with the public meetings requirement in accordance with Chapter 14 of this title or to disclose public information in accordance with Article 4 of Chapter 18 of this title.