Bike Walk Savannah – This is the local non-profit for cycling and pedestrian advocacy in Savannah. Formerly known as the Savannah Bicycle Campaign.
They also have a great Bike Savannah Guide:
https://bikewalksavannah.org/resources/bikesav-map/
Georgia Bikes – This is a major non-profit that advocates for cycling safety and cycling-friendly laws.
The League of American Cyclists – This is a national lobbying group for cycling in America.
Georgia Governor’s Office of Highway Safety Pocket Guide to Bicycle Laws
https://www.gahighwaysafety.org/campaigns/bicycle-and-pedestrian-safety/
Georgia DOT Bicycle Safety Page
https://www.transportation.gov/pedestrian-bicycle-safety
There are also numerous bike clubs in Savannah:
Savannah Wheelmen
Coastal Bicycle Touring Club