(a) The incorporated municipalities and counties of this state are hereby empowered to provide relocation assistance to persons displaced by the acquisition of real property by local land acquisition programs and to comply with the Uniform Relocation Assistance and Real Property Acquisitions Policies Act of 1970, Public Law 91-646, Title 2, §§207 and 210, 84 Stat. 1898 and 1899, 42 USCA, §§4627 and 4630, and the requirements and regulations thereunder. Such incorporated municipalities and counties are empowered to appropriate public funds to provide such relocation assistance and to comply with the requirements of such act and the requirements and regulations thereunder in connection with projects financed in whole or in part by federal funds. The incorporated municipalities and counties of this state may exercise the authority granted hereunder by enactment of appropriate resolutions or ordinances to establish criteria for providing such relocation assistance.
(b) Nothing contained in this section shall be construed as creating, in any condemnation proceedings brought under the power of eminent domain, any element of damages not in existence on March 10, 1975.