Mississippi Code Title 63. Motor Vehicles & Traffic Regulations § 63-3-619

(3)(a) Subject to the provisions of paragraph (b) of this subsection, subsections (1) and (2) of this section shall not apply to the operator of a nonlead vehicle in a platoon, as defined in Section 63-3-103(k), as long as the platoon is operating on a limited access divided highway with more than one (1) lane in each direction and the platoon consists of not more than two (2) motor vehicles.

(b) A platoon may be operated in this state only after an operator files a plan for approval of general platoon operations with the Department of Transportation. If that department approves the submission, it shall forward the plan to the Department of Public Safety for approval. The plan shall be reviewed and either approved or disapproved by the Department of Transportation and the Department of Public Safety within thirty (30) days after it is filed. If approved by both departments, the operator shall be allowed to operate the platoon five (5) working days after plan approval. The Motor Carrier Division of the Department of Public Safety shall develop the acceptable standards required for each portion of the plan.