Rockabye often is asked questions about car seats, boosters. Particularly, at what age can children ride without a safety seat. We always check various sources on a constant basis, since safety is essential to our business, to assure we are up to date on car safety. Unfortunately, car safety laws and regulations vary from State to State. Thus, this causes confusion so parents must remain vigilant when planning road trips. It's best to follow the recommendations outlined by the National Highway Traffic Safety Administration (NHTSA). This federal agency's guidelines are either equal or more stringent than individual State requirements.
Check out this excellent video about car safety for kids. The Car Seat Safety Fit Test is the ideal measure to keep kids safe.
Here is a link to a car seat safety Fit Test. The test helps determine when it is safe for a child to ride without a safety seat. Essentially, all children are safest when using an appropriate safety seat in the back seat. The general rule is that safety seats are needed:
until the child is 4' 9",
the child can sit in the back seat with their back fully against the back of the seat,
with knees bent at the edge of the seat.
and feet flat on the vehicle floor board.
If the answer is "No" to any of these parameters, then the child should be using an approved safety seat.