For maximum safety, parents and caregivers should follow these basic rules for using a child safety seat:

• Use rear-facing infant seats in the back seat from birth to at least one year of age and at least 20  pounds.
• Use forward-facing toddler seats in the back seat from age one and 20 pounds to about age four  and 40 pounds.
• Use booster seats in the back seat from about age four to at least age eight—unless the child is  4’9”  or taller.
• Use safety belts in the back seat at age eight or older or taller than 4’9”.