The Alpharetta City Council has approved lowering the speed limit on part of Canton Street from 30 mph to 25 mph, responding to a city traffic study of the popular downtown corridor. The change targets a stretch of road that threads through one of the city's oldest residential neighborhoods and feeds directly into downtown's dining and retail strip.
According to CBS News, the city is considering a lower speed limit on Canton Street. The corridor's heavy foot traffic has focused attention on whether residents and pedestrians can cross safely.
The council's vote is not necessarily the final step for radar enforcement. A local resolution and new signage are sufficient when radar detection is not used, but a speed-limit change intended to be enforced with radar must be submitted to the Georgia Department of Transportation and the Georgia Department of Public Safety for approval and an official Radar Permit update.
Why State Sign-Off Still Matters
Georgia law gives municipalities room to act on their own, but only up to a point. Under Georgia Code § 40-6-183, cities can lower speed limits on local urban or residential streets to as low as 25 mph, provided the reduction is backed by an official engineering and traffic investigation — the kind of study Alpharetta just completed on Canton Street.
But posting a new sign is not the same as being able to enforce it with a radar gun. Per the Northeast Georgia Regional Commission, any speed reduction that a city intends to enforce with radar speed-detection devices must be submitted to both the Georgia Department of Transportation and the Georgia Department of Public Safety to update the city's official Radar Permit. Until that state review is complete, the same regulations note that local resolutions alone only permit non-radar enforcement of the new limit.
Not Alpharetta's First Attempt at Slowing Canton Street
This is not the city's first pass at reining in traffic through the corridor. The Alpharetta City Council previously lowered speed limits across several downtown streets in March 2018, including cutting Canton Street's limit from Milton Avenue to a point 50 feet north of Church Street from 30 mph down to 25 mph, according to The Atlanta Journal-Constitution.
The city's earlier speed-limit changes point to a tension city leaders may still have to confront: whether a lower posted limit alone will meaningfully slow drivers, or whether physical measures will be needed to force real compliance.
A Historic Neighborhood Under Pressure
Canton Street between Church Street and Hopewell Road runs through the heart of Alpharetta's historic Garden District, described by The Mike Price Team as the city's oldest residential neighborhood and home to its largest collection of original cottage homes. That designation underscores why residents along the corridor have pushed for change: narrow, historic streets built for a quieter era now carry steady traffic bound for downtown's restaurants and shops.
The stakes extend beyond one street. Georgia Department of Transportation crash data analyzed by the Rafi Law Firm shows Alpharetta recorded 1,957 total traffic collisions in 2025, including 15 pedestrian accidents that resulted in three fatalities and 11 injuries. The firm's analysis found that 93.3% of pedestrian crashes in the city that year resulted in injury or death.
Part of a Wider North Fulton Trend
Alpharetta's proposal comes amid broader attention to speed limits and traffic safety in North Fulton.
Alpharetta already has some experience enforcing lower limits with technology. The city currently enforces 25 mph speed limits using automated radar safety cameras during school arrival and dismissal hours near Alpharetta Elementary and Alpharetta High School, with captured violations undergoing public safety officer review before any citation is issued. Any radar enforcement on Canton Street would require submission to the Georgia Department of Transportation and the Georgia Department of Public Safety for the applicable Radar Permit update.
