(a) Without limitation of the powers granted under Paragraph I, the General Assembly shall have the power to provide by law for:
(1) Restrictions upon land use in order to protect and preserve the natural resources, environment, and vital areas of this state.
(2) A militia and for the trial by courts-martial and nonjudicial punishment of its members, the discipline of whom, when not in federal service, shall be in accordance with law and the directives of the Governor acting as commander in chief.
(3) The participation by the state and political subdivisions and instrumentalities of the state in federal programs and the compliance with laws relating thereto, including but not limited to the powers, which may be exercised to the extent and in the manner necessary to effect such participation and compliance, to tax, to expend public money, to condemn property, and to zone property.
(4) The continuity of state and local governments in periods of emergency resulting from disasters caused by enemy attack including but not limited to the suspension of all constitutional legislative rules during such emergency.
(5) The participation by the state with any county, municipality, nonprofit organization, or any combination thereof in the operation of any of the facilities operated by such agencies for the purpose of encouraging and promoting tourism in this state.
(6) The control and regulation of outdoor advertising devices adjacent to federal aid interstate and primary highways and for the acquisition of property or interest therein for such purposes and may exercise the powers of taxation and provide for the expenditure of public funds in connection therewith.
(b) The General Assembly shall have the power to implement the provisions of Article I, Section III, Paragraph I(2.); Article IV, Section VIII, Paragraph II; Article IV, Section VIII, Paragraph III; and Article X, Section II, Paragraph XII of the Constitution of 1976 in force and effect on June 30, 1983; and all laws heretofore adopted thereunder and valid at the time of their enactment shall continue in force and effect until modified or repealed.
(c) The distribution of tractors, farm equipment, heavy equipment, new motor vehicles, and parts therefor in the State of Georgia vitally affects the general economy of the state and the public interest and public welfare. Notwithstanding the provisions of Article I, Section I, Paragraphs I, II, and III or Article III, Section VI, Paragraph V(c) of this Constitution, the General Assembly in the exercise of its police power shall be authorized to regulate tractor, farm equipment, heavy equipment, and new motor vehicle manufacturers, distributors, dealers, and their representatives doing business in Georgia, including agreements among such parties, in order to prevent frauds, unfair business practices, unfair methods of competition, impositions, and other abuses upon its citizens. Any law enacted by the General Assembly shall not impair the obligation of an existing contract but may apply with respect to the renewal of such a contract after the effective date of such law.