Mississippi Code Title 63. Motor Vehicles and Traffic Regulations § 63-35-25

(1) Unless otherwise provided in this chapter, and notwithstanding any other provision of law, fully autonomous vehicles and automated driving systems are governed exclusively by this act. The Department of Public Safety, in conjunction with the Department of Revenue, with regard to DOR's specific functions related to the registration and titling of motor vehicles, shall implement and enforce the provisions of this chapter.

(2) No state agency, political subdivision, municipality or local entity may prohibit the operation of fully autonomous vehicles, automated driving systems or on-demand autonomous vehicle networks, or otherwise enact or enforce rules or ordinances that would impose taxes, fees or other requirements, including performance standards, specific to the operation of fully autonomous vehicles, automated driving systems or on-demand autonomous vehicle networks in addition to the requirements of this act.