Atv riding
 

Do you have to have a drivers license to drive a quad on an unpaved road if you are 16 years old?

Depends on the laws in the state you live in. Check with your fisheries and wildlife office or whoever makes the rules for off-road vehicles.

Here in North Carolina you don't need a driver's license but you can't legally ride an ATV on ANY road, paved or unpaved if it is state maintained.