Is it legal to ride on sidewalks in Georgia?
Okay, I decided to look this up.  It appears that cycling on the sidewalk is not legal in Georgia.

http://www.intownbicycles.com/bicycle-faqs/bicycle-rules-of-the-road

http://www.gahighwaysafety.org/docs/gabicyclelawenforcementguide.pdf

https://georgiabikes.org/index.php/resources/35/76-ga-bicycle-laws

GA Code 40-6-144