In New York, children should remain in a booster seat until at least age 8. Children in booster seats should remain in the back seat.Children under eight years of age, weighing under 100 pounds, and shorter than 4'9" need to use a booster chair in the backseat. The state of New York requires all children eight and under to be restrained in an appropriate car or booster seat. Children who are less than eight years old, less than 100 pounds, and less than 4'9" tall are required to use a booster seat in the rear seat. Booster Seats: Use a belt positioning booster seat when your child's weight or height is above the forward-facing limit for the car seat. New York State Law requires children below eight years of age to use a child restraint system in every car they will regularly ride. According to New York State's Child Passenger Safety laws, all children under the age of 2 must be in a rearfacing safety seat while in the car. New York law requires that children under the age of two must ride in a rearfacing car seat. Do you need a car seat or a booster for your child?