The rules for being able to legally ride a mini bike is different per area, but there are some regulations that everyone has to follow no matter where they reside. For public road use, riders usually have to be between 14 and 16 years old. While in the United States, most states feel that anyone riding a mini bike on the street should have a valid driver's license or motorcycle permit. In many jurisdictions, mini bikes are illegal to operate on public roads without a motorcycle license and in some areas a driver's licence at all.
What is the part that engine size also matters in legal restrictions. For instance, motorcycles powered by engines less than 50cc may be classified differently from larger bikes to allow for lighter regulations and make it possible for younger riders to start riding them. Mini bikes are required in some jurisdictions to include things like working lights, mirrors and turn signals as well as being road legal. Vehicles may also have to adhere to certain emission regulations. In California, only certain models of mini bikes may be street-legal due to more stringent emissions regulations.
Many places require insurance and registration as well. Registering a vehicle, especially a mini bike, is the legal process involving registration with state motor vehicle regulatory agency. Vehicle registration is compulsory for all vehicles in this age and days. Riders may be required to sign liability waivers, and in some cases, have liability insurance or vehicle insurance. A rider who fails to insure himself or herself properly may face fines and sanctions, so it is a good idea to check this before taking to public streets.
And cases made to the National Highway Traffic Safety Administration (NHTSA) recently underscore why following these mandates are crucial, as driving an unregistered or uninsured vehicle on public streets can result in a ticket. NHTSA reports that those riding mini bikes are much more at risk in traffic, making it increasingly important their bike meets all safety standards for reducing accidents.
In the end, it is up to the rider to become aware of their local regulations as they are set so for the safety of the rider and others on the road. If you are unsure, it is best to first check with local city authorities or a DMV office on legal guidelines regarding riding a mini bike on public roads.