VIDEO: Study says booster seats taken out too soon

More parents are using booster seats for kids in cars.

But a new study suggests they aren't using them long enough.

Safe Kids says 9 out of 10 parents answering its survey take the seats out too soon - mostly because they don't know children should be 57 inches tall before going to seat belt only.

In addition, about a quarter of the parents say they don't buckle up their kids on every single car ride.

However, experts say most accidents happen close to home.