Children under 4 years old and less than how many pounds should be in a child passenger restraint system?

Children under 4 years old must be secured in a child passenger restraint system if they weigh less than 40 pounds. This regulation is in place to ensure that young children, who are particularly vulnerable in the event of a vehicle crash, are adequately protected. The use of a child safety seat that is designed to accommodate their size and developmental needs helps to reduce the risk of injury during an accident.

In Missouri, the law mandates this requirement, aligning with general safety recommendations provided by both state and national agencies. The specification of 40 pounds is based on research and analysis of crash data, which highlight the importance of using proper restraints for children based on their age and weight to enhance their safety.