The Child's Riding Belt is a children's recreation vehicle riding belt that enables small children to ride on the back of most recreational vehicles where the passenger sits behind the driver.
Now snowmobiles, motorcycles, ATV's, quads and even horses can become fun for the whole family. Children feel very secure in the belt and parents can now relax and enjoy the ride while having complete control of the child on the back. The ride becomes fun and enjoyable for both child and parent.

Check this web site for Maryland Motor Vehicle Administration's thoughts on the Child's Riding Belt.
Maryland Motor Vehicle Administration
Here is another web site with a user's experience.
Precious Cargo