Minnesota state law requires that children under age 4 be restrained in an appropriate, federally approved car seat or booster seat. Car seats must be installed and used according to manufacturer's instructions. Minnesota law also requires that infants under one year of age and weighing less than 20 pounds must ride in a rear-facing car seat. The state of Minnesota suggests that compliance with car seat safety law is a minimum safety standard, and suggests that children remain in a booster seat to 80 pounds and remain in the back seat until age 13.