When should I switch my 2-year-old from a car seat to a booster seat?
Don't be in a hurry to move to a booster seat! A properly installed car seat positioned in the middle of the back seat is the safest place for your child. It provides head and upper body protection that a booster seat lacks and has better shoulder restraints for a smaller body. Don't even consider the change until your child is at least 30 pounds and about age 4 to allow for growth in the trunk to accommodate shoulder straps. At 40 pounds, she can make the transition to the adult restraints, but you may prefer to keep her in the booster even longer, as it allows her to see outside. With every transition in car seating, you'll run the risk of getting into new arguments with her, and a proper car restraint should never be negotiable. Do yourself a favor and use the car seat as long as possible.