In Georgia, as in all states, laws against driving under the influence (“DUI”) aren’t limited just to alcohol. You can also be charged with DUI for operating a vehicle while impaired by drugs—illegal, validly prescribed, and even over-the-counter.
Sobriety checkpoints are legal in Georgia (see 318 S.E.2d 693 (Ga. App. Ct. 1984)). These checkpoints (also referred to as "mobile checkpoints" or "roadblocks") are police traffic stops that are not tied to any specific or individual suspicions.