If the weight of a child under the age of 4 exceeds 40 pounds, the child may be restrained in an appropriate child restraint system, allowing the child to use a booster seat. Children ages 4, 5, 6 and 7 must be properly secured in an appropriate child restraint system, one for which your child meets the weight and height recommendations of the child restraint manufacturer. [Section 1229-c(1), NYS Vehicle and Traffic Law] A child safety seat or harness/vest or booster seat may be used. Note: As of November 24, 2009, this requirement applies to all children until their 8th birthday.
The vehicle's safety belts are not defined as a child restraint system under this law, as safety belts are not designed for children under 4 feet, 9 inches and therefore, do not protect young children.