Illinois Car Seat Laws Height And Weight 2025. According to the car seat laws in illinois, children younger than 8 years must be placed in a car seat unless they have a. When we turn to the illinois child passenger protection act, we can see that the state law says that children who are under the age of eight must be properly secured an.

They design their car seats based on height and weight, not age. Child safety seats and child seat belt laws in illinois: