Many residents express concerns that it won’t fix traffic problems

If the term “roundabout” conjures up images of Chevy Chase caught in an endless circle in the 1985 film, “National Lampoon’s European Vacation,” you probably haven’t given the more modern versions here in metro Atlanta much of a chance.

Peachtree Corners plans to add a second roundabout in the city, adding to the first one built in 2018. That one, at Medlock Bridge Road and Peachtree Corners Circle, generated hundreds of social media comments from residents and stakeholders who were frustrated with the chosen solution for the busy intersection.

Hoping to alleviate some of the angst this time, a public information meeting on March 27 gave those interested in the planned roundabout at Peachtree Corners Circle — positioned between The Forum entrance and Crème de la Crème — an opportunity to look at the plans. About 20 people showed up.

Peachtree Corners Public Works Director Greg Ramsey, who facilitated the open house, said some who came in with the opinion that the roundabout wasn’t a good idea had changed their minds by the time they left.

“We had one couple who came in who said they didn’t like the idea at first, but after watching the videos and seeing the renderings and talking to our staff and our design team, that that they had their minds changed, that they felt like it’s going to be a positive change and a positive addition and safer for the entire community,” he said.

Designed to improve traffic flow and safety, this new intersection will feature pedestrian-friendly crossings, dedicated bike lanes and better access to local businesses, according to the city. Peachtree Corners officials and engineers from Kimley-Horn shared insights on the design, traffic impact and construction timelines.

High rate of traffic crashes

When the first roundabout opened, Ramsey told the Atlanta Journal-Constitution, “Roundabouts promote a continuous flow of traffic in all directions versus a traditional traffic signal that stops at least one direction at all times. The roundabout allows for a greater volume of traffic through an intersection while minimizing delays, particularly during off-peak hours.”

He still believes it’s the best solution for many blocked areas.

Back in January of 2022, the city of Peachtree Corners commissioned a study to determine what type of traffic calming device would help alleviate congestion and cut down on crashes along Peachtree Corners Circle between The Forum’s major driveway and Peachtree Parkway.

Crash data for the five-year period between January 1, 2017 and December 31, 2021 showed that approximately 69% of the 36 crashes reported in the area were property damage only, and just one crash resulted in suspected serious injury.

Crashes were also evaluated based on the manner of collision. Approximately 83% of the total reported crashes within the study area were either angle or rear-end type crashes. Each had 15 occurrences. Sideswipes and single-vehicle crashes were also reported within the analysis window.

• The highest crash frequency occurred in the right-turn lane approaching Peachtree Parkway. Seven rear-end-type crashes occurred within the turn lane.
• The second highest crash frequency occurred at The Forum’s main driveway, where six crashes were caused by drivers turning left from The Forum crashing with westbound through-traffic on Peachtree Corners Circle.
• Three sideswipes occurred in the westbound lanes of Peachtree Corners Circle just west of Peachtree Parkway.
• Of the total reported crashes within the study location, 12 occurred at the intersection of Peachtree Corners Circle and The Forum’s major driveway.
• Of the 15 reported rear-end crashes, 10 of them occurred at the intersection of Peachtree Parkway and Peachtree Corners Circle.
• Of the 14 crashes reported at The Forum’s major driveway, nine were angle crashes.
• Six of the eight reported crashes at The Forum’s minor driveway/QuikTrip driveway were angle crashes. One of these reported angle crashes involved a bicyclist, who was seriously injured.

Because angle crashes cause the greatest number of fatalities and injuries of all crash types, safety improvements were a high priority in this intersection control study.

Why here, why now?

Prompted by the crash rates, the next step was to find a solution. Due to multiple conflict points that involved vehicles, pedestrians and high traffic volumes (locations where the paths of road-users coincide, representing potential crash areas and categorized as crossing, merging, diverging or pedestrian interaction), several options were ruled out.

“The need was a safety one. There are a lot of conflict points out there between vehicles turning in all directions and pedestrians in the area as well,” said Ramsey. “There’s a daycare and gas station there and very high traffic volumes at certain periods of the day.”

This particular intersection proved tricky because of the volume and variety of traffic.

“With four or five driveways and lots of traffic dumping onto the street coming from The Forum and other businesses there, you can imagine multiple periods of high volume — like the lunch hour rush,” he continued. “Additional traffic is being projected as well for multi-family [structures] that have been rezoned in that development.”

He added that many people also feel the need to speed through the intersection.

“Unfortunately, a lot of that traffic is going at a high rate of speed and so some of these crashes and near misses that we’ve seen are extreme.”

Improved safety and feasibility

Traffic studies and feasibility reports approved by Gwinnett County to reduce accidents and improve traffic flow in the area showed that traditional traffic signals are impractical due to proximity to 141.

With the success of the roundabout at Peachtree Corners Circle and Medlock Bridge Road, though, Ramsey said once people get used to it, they’ll find that it is for the better.

“It certainly has improved safety at that intersection, and we’ve been very pleased with how it turned out,” he said. “Incidentally, there was a lot of negative community feedback when that roundabout was proposed, but ironically, two years after that project opened, the Atlanta Journal-Constitution wrote an article saying, basically, ‘Hey, this turned out to be okay after all.’”

The city council has funded the new project design and conceptual development, as well as the traffic study, so right now it’s progressing forward, Ramsey added.

“This is not like a rezoning where there’s public hearings, it’s just a public project that the city has in its annual capital improvement program, just like a number of other intersection improvements that we’ve done, are doing and will be doing,” he said.  

How roundabouts help with traffic

Ramsey shared that roundabouts act in two ways.

“Number one, it’s a traffic calming mechanism. It slows people down and slower traffic is safer traffic, especially when pedestrians are involved. And at the same time, it keeps traffic moving,” he said. “And then at the same time again, not stopping at a red light, having to sit there idling your vehicle and sitting in the hot sun is a plus — traffic is always flowing.”

He pointed out many cities in Europe as well as the city of Carmel-by-the-Sea are big proponents of roundabouts. He added that there are cities in Indiana that would like to do away with traffic signals altogether and use roundabouts exclusively. Metro Atlanta has several examples as well, including the Riverside Drive on-ramp to I-285.

The next phase of the project is sending out a request for proposals for construction. Ramsey said it should be out by late summer/early fall.

“It’s a rough timeline right now, and there’s nothing set in place for a variety of factors — right-of-way and easement acquisition needs that are required,” he said.

Right now the timeline is looking like completion will be in 18 months or so.

Public reaction

The comments on the Peachtree Corners Life Facebook page a few days after the open house were a mixed bag.

Gail Livor Glattli: Hate those things. Nobody knows how to use them correctly.

Actually, roundabouts are pretty easy to navigate, said Ramsey.

“Obviously, you’re going to approach something new. We hope you’re paying attention about how to get through it,” he said. “But then the second, third and many times after they go through it, I think the comfort level grows. And certainly if you’re not distracted with your phone or other devices in your vehicle, paying attention to the signage and the channelization of the roadway is doable.”

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Doug Edstrom: Oh boy, can you offer a free training class on how to proceed through one of these?

The Federal Highway Administration has a YouTube video that explains how to navigate roundabouts.

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Karin Arranz: Traffic there is a cluster. Hopefully this will help fix the near misses we deal with daily.

Michael Falkner: Thank goodness. Anything is better than that current mess.

Glen G. Gordon: This is badly needed and will help tremendously. I like that the crosswalk at the Forum driveway is set back a bit.

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Port Rose Kaufman: Why don’t they just put up a light at that corner? I’ve seen at least 10 accidents there over the years.

Ramsey said a traffic signal isn’t allowed there.

“It’s too close to 141 for a traffic signal with the standard red light, green light at that intersection,” he said. “It’s against GDOT standards to put in a signal at that close proximity. It would actually back up traffic into 141, which would make that heavy intersection even worse, and that’s certainly something we want to avoid.”

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Bob Ballagh: A whole lot better than the current intersection.

“Obviously, we’ve got a few people who are just against the idea, but I’m not sure that we’re going to ever be able to make everybody happy,” said Ramsey.

“We’re trying to make the best solution possible. There’s going to be some discomfort with change for some people on everything we do, but we believe this is the best solution of those that are available to us.”

For more information about the project, visit peachtreecornersga.gov/1449.

Ramsey also encouraged residents and stakeholders with questions to contact his department at publicworks@peachtreecornersga.gov.

Live pilot in Georgia smart city showcases groundbreaking advancements in pedestrian safety and roadway technology 

Peachtree Corners — one of the nation’s first smart cities powered by real-world connected infrastructure and 5G — has announced a collaboration for a pilot project with ConnVAS, an innovator in advanced traffic and pedestrian safety solutions.

The pilot launched outside of Pinckneyville Middle School, addresses the safety challenges of busy crosswalks by testing how real-time, AI-driven detection can reduce accidents and create a safer environment for pedestrians, cyclists and drivers by activating alerts, even when pedestrians do not activate crosswalk signals.  

An AI-driven computing system

The pilot utilizes ConnVAS’s MAGIC (Multi-Access Generic Infrastructure Controller), AI-driven edge computing system, which incorporates cameras mounted on RRFB poles (Rectangular Rapid Flashing Beacon) to monitor pedestrian and vehicle movement, V2X transceivers for real-time vehicle-to-infrastructure communication and an integrated audio-visual alert system.

When the system detects a pedestrian or cyclist using the crosswalk, crossing outside of the crosswalk lines or a vehicle approaching the crosswalk, each of its technologies work together in real time to immediately activate alerts to both the users of the crosswalk and incoming drivers — even if the pedestrians did not press the crosswalk buttons.

The system also continually collects anonymous data such as felonies, near-misses and pedestrian and vehicle counts for ongoing analysis of crosswalk usage and traffic.  

“Peachtree Corners is dedicated to implementing technology solutions that address real-world safety challenges for our residents,” said Brandon Branham, executive director of Curiosity Lab.

“The ConnVAS system provides an innovative solution to common safety hazards such as pedestrians crossing outside of designated areas, failure to press crosswalk buttons and drivers failing to detect pedestrians or cyclists in time,” he continued.

“By integrating advanced AI detection and real-time alerts, this ConnVAS pilot enhances safety in an area where our residents need it the most today, while also generating actionable insights that can guide our development of smarter, more responsive infrastructure in the future. We are excited to be continuing the pilot program to continue to gain insights in how we can improve our city for our residents.”  

Collecting data and observing patterns

Preliminary results from the pilot program that were extracted from a midweek 72-hour period, show distinct patterns that can better help city managers ensure roadways are safe and efficient for VRUs (vulnerable road users) and drivers.

At the pilot location, ConnVAS reported over 220 pedestrian crossings for more than 70 crossing events, with only three false alarms. The system consistently and successfully activated flashing beacons and audio alerts in real time, ensuring those crossing the road and oncoming drivers were promptly warned.

Additionally, traffic data collected by the system is being used to evaluate the technology’s impact and will aid city officials in making informed decisions about improving road safety and urban planning in specific locations.  

“The pilot we are conducting in Peachtree Corners has been instrumental in refining our technology and demonstrating its impact in a real-world environment,” said Danny Frydman, founder and CEO of ConnVAS. “Through continuous testing and data analysis, we’ve been able to improve the accuracy of our system’s AI detection, ensuring faster and more reliable activation of alerts. This has directly enhanced the safety of the area by addressing critical challenges, including missed warnings for pedestrians and cyclists or delayed driver awareness.”

“The insights gained from this pilot are helping us evolve the software to adapt to complex traffic scenarios and create safer, smarter intersections everywhere,” Frydman added. “We hope to scale this solution throughout the city as the pilot and technology continues to develop.”

Evaluating features

The ConnVAS pilot in Peachtree Corners is continuing to evaluate various features, including autonomous operation features that eliminate the need for manual button presses and reduce false alarms, cyclist-friendly designs and V2X connectivity to communicate with connected vehicles to alert drivers of crosswalk activity.

Additional capabilities such as dynamic illumination based on pedestrian location are also being explored to further enhance VRU safety. 

About ConnVAS

ConnVAS is an innovator in advanced traffic and pedestrian safety solutions. At the core of ConnVAS solutions is the ConnVAS MAGIC — an AI-driven edge computing traffic detector. The MAGIC stands at the heart of ConnVAS enhanced RRFB, intelligent signalized intersection and traffic analytics solutions.

Providing edge computing solutions that include AI detection, V2X communication and diverse interfaces, ConnVAS enhances the safety and efficiency of the transportation environment.

For more information, visit connvas.com.

Peachtree Corners, one of the United States’ first 5G smart cities, announced a collaboration with Seyond, a global provider of image-grade LiDAR technology.

Through this collaboration, Seyond will deploy and validate its LiDAR solutions in a real-world environment in an effort to create safer streets and smoother traffic flow for both vehicles and vulnerable road users (VRUs) in the city.

Seyond’s LiDAR solution is already deployed within Curiosity Lab’s smart city ecosystem and at a select intersection in the City of Peachtree Corners.

These locations use a combination of Seyond’s LiDAR, OmniVidi Perception Service Software Platform and Blue-Band Integrator AI to provide a real-time 3D mapping of the areas, with both vehicles and pedestrian object detection.

These combined technologies collect data that can be used to implement traffic and VRU signal solutions to make intersections safer and more efficient, while also protecting citizen privacy.

The collected data from Seyond’s data and Blue-Band’s analysis can be used by Peachtree Corners to adjust traffic signals, pedestrian crossing signals, intersection design and more to address specific safety and efficiency needs.

“Curiosity Lab’s shared public domain available for testing, deployment and validation is one of the many characteristics that attracted us to collaborate with the organization,”

“By collecting data from high-volume intersections across vehicular and pedestrian traffic, we will be able to improve the quality and reliability of detection results, which can help validate Intelligent Traffic Solution-based use cases,” said Seyond Co-founder and CEO Junwei Bao.

“Our technology can be used at a signal intersection but also across parking, large areas of pedestrian crossings and more. Curiosity Lab and Peachtree Corners will allow us to explore these use cases in a real-world environment as we continue to advance and validate our solutions for public use to improve safety for all,” he added.

Seyond’s LiDAR system is able to map large environments up to 1,640-foot range that would usually require multiple traffic cameras. The hardware, originally developed and tested for autonomous vehicles, is manufactured to be automotive-grade and has been designed to withstand extreme weather conditions.

These capabilities enable Curiosity Lab and Peachtree Corners to have accurate monitoring 24/7 to make the most educated intelligent transport updates to meet the needs of citizens and visitors.

“LiDAR technology is going to change the way cities look at managing vehicular and pedestrian traffic,” said Curiosity Lab Executive Director Brandon Branham. “

LiDAR allows the city to collect data on traffic movement, congestion, wrecks, near misses and even pedestrian activity, while protecting everyone’s privacy. Seyond’s solution takes the capabilities of LiDAR one step further and enables us as a city to evaluate how we can make our major intersections safer and more efficient for VRUs and everyday traffic,” he explained.

Learn more about Seyond’s technologies at seyond.com.