Wisconsin Statute 347.48 explains the mandatory use of seat belts and the appropriate use of child safety seats.
Seat belts are the simplest and most effective tools we have to reduce highway fatalities and serious, life altering injuries.
Children ages four to eight must be restrained in a vehicle seat belt or car safety seat.
No one may transport a child unless the child is properly restrained, meaning it must be fastened in a manner prescribed by the manufacturer of the system, which permits the system to act as a body restraint.
Wisconsin law provides that all persons transporting children must have the children properly restrained to comply with the following criteria:
Rear-facing child safety seat in the back seat* is required when the child:
is less than 1 year old or
weighs less than 20 pounds
Forward -facing child safety seat in the back seat* is required when the child:
is at least 1 year old but less than 4 years old
weighs at least 20 pounds but less than 40 pounds
Booster seat is required when the child:
is at least 4 years old but less than 8 years old
weighs at least 40 pounds but less than 80 pounds
is not 57 inches (4 feet, 9 inches) or taller
Safety belt is required when the child:
is 8 years old or older or
weighs 80 or more pounds or
is 57 inches or taller
*Child safety seat must be in the back seat if the vehicle is equipped with a back seat.