It depends on your state and county. I got pulled over driving a vehicle without one, and was issued a warning ticket for speeding. However, if you are issued a ticket and convicted it will be on record and if the DA researches your driving record at anytime they will be able to see that you were driving a vehicle without one and can revoke your bond.

If you are pulled over and issued a ticket, I would recommend taking defensive driving to have it dismissed ASAP.