Louisiana vs Mississippi

Louisiana and Mississippi share a long border but sit at opposite ends of the child restraint range. Louisiana writes out a full staged law: rear-facing until age 2, a forward-facing harness after that, a belt-positioning booster until age 9, and the back seat for every child under 13. Mississippi sets no rear-facing age, ends the booster at age 7, and has no back-seat rule. At every stage Louisiana asks for more, which makes it the clearly stricter state, and the gap is widest for the youngest and the oldest children covered.

Louisiana requires a child under 2 to ride rear-facing until they reach the seat's manufacturer limit, and it requires every child under 13 to ride in the rear seat where one is available. Mississippi sets no rear-facing age and no back-seat rule. So a Louisiana parent can be cited for turning a one-year-old forward or for seating a 10-year-old in front when a back seat is open, while a Mississippi parent cannot. These two rules, rear-facing under 2 and the back seat under 13, are the heart of Louisiana's tougher law and the places a family will notice the difference most.

Louisiana keeps a child in a belt-positioning booster until age 9, and it spells out the seat belt fit test a child must pass to graduate: sitting all the way back, knees bending over the seat edge, the lap belt low across the thighs, and the shoulder strap across the center of the chest. Mississippi ends the booster at age 7, or once a child is both 4 feet 9 inches and 65 pounds. So a 7 or 8 year old who could move to the seat belt in Mississippi still rides in a booster, in the back, in Louisiana. Both fall under the American Academy of Pediatrics guidance to keep a child in a booster until the belt actually fits, but Louisiana comes closer to it.

The law that applies is the law of the state you are physically driving in. Louisiana and Mississippi meet along I-20 between Vicksburg and Monroe, I-55 between McComb and Baton Rouge, and I-10 between Slidell and the Gulf Coast. To stay legal across the whole trip, follow Louisiana's stricter rules the entire way: rear-face under 2, keep a child in a booster until age 9, and seat every child under 13 in the back. A family moving from Mississippi to Louisiana picks up a rear-facing rule, two extra booster years, and a back-seat mandate at once.