You're confusing "license" with "registration." Mopeds (motor vehicles under 50cc engine displacemsent) are exempt from registration requirements in Georgia, but the drivers still have to be licensed. So mopeds aren't required to have tags and aren't supposed to exceed 30mph. That means they can't be in the interstate because the interstate has a minimum speed higher than the maximum speed for a moped. (Besides, who would be foolish enough to get on I-285 on a moped?)
Here is the Georgia DDS page: http://www.dds.ga.gov/drivers/dldata.aspx?con=1749319514&ty=dl
Personally, I think DUI probationers should be allowed to have mopeds. Mopeds are too small and slow to hurt anyone but the driver, and it would provide a limited mode of transportation until they could get their full license back.
↓ Mark this answer as "Helpful" or "Best Answer" if you like it.
For more information, contact us at www.SteakleyLawFirm.com or (404) 835-7595. The initial consultation is always free for Avvo users.