Transportation funding; authorize public-private partnerships to include naming rights.

HB 622 allows Mississippi's transportation department, local governments, or municipalities to partner with private companies to fund highway, road, or bridge improvements in exchange for naming rights to those specific sections. It prohibits partnerships with companies selling products illegal for minors (like certain tobacco or alcohol) and requires all private funding to be deposited into a dedicated state fund. This fund must be used exclusively for capital improvements to rest areas, visitor centers, and welcome centers statewide, with unspent funds carrying over annually instead of lapsing. The bill creates a clear mechanism for leveraging private investment in transportation infrastructure while restricting partnerships based on product safety standards.