In some states, there are certain exceptions to the rules. Some states may allow go-carts to be operated on private property, such as in a parking lot or on a closed course. Most states also have laws that allow go-carts to be operated on private roads, but those roads must be closed to public traffic.
In order to ensure that you are not violating any laws, it is important to check with your local authorities to determine the specific rules for riding go-carts in your area.