GwinNETTwork: Week 9

What an amazing experience this program has been! We’re so grateful for getting to meet new people and learn new things as part of this program.

We are Angela Lau (Cornell University ’22), Jason Chen (Purdue University ’20), and David Li (Stony Brook University ’19). Our team, nicknamed GwinNETTwork, worked on the Connected Vehicle Technology Master Plan based in Gwinnett County, the second largest county in the state of Georgia. Traffic in the Atlanta metro area can get extremely congested. Therefore, the long term goal of the project was to connect vehicles and traffic signals to reduce this congestion. The portion of the project that we worked on focused on emergency vehicles under Gwinnett County Fire and Emergency Services, and we mainly focused on analyzing data from on-board sensors (vehicle location, time, speed, bearing values, etc.) positioned in the emergency vehicles themselves to see where they might experience delays when responding to emergency situations.

Upon receiving the collected data and doing initial visualizations of the data points, we wrote an initial series of Python scripts to filter out points that were deviating from fire truck routes, points that were not within range of an intersection, points receding from an intersection, and taking into account when an emergency vehicle may turn on an intersection. Finally, we took some first steps on working with the data from the traffic signal sensors. Another series of scripts were generated to obtain signal status at the time of intersection approaches by emergency vehicles, as well as to obtain the slowest approaches on each signal color (red, yellow, green) by average speed. In addition to consulting our advisor, Dr. Angshuman Guin from Civil and Environmental Engineering, we also consulted Gwinnett County firefighters midway through the summer to get their perspective as to how certain emergency scenarios may be approached.

To wrap up our program, we prepared a presentation and poster detailing what we achieved in these past ten weeks, as well as where the project can go in the future, and gave our final presentations this Wednesday night. The results are available for display at this website (, where we use two Leaflet.js bubble maps to display average speed and delays at intersections throughout the county.  In the coming weeks, we hope to continue working on associating the signal data with the GPS data before handing off the project to Gwinnett County.  This project definitely has the potential to be applicable to solving traffic problems in the entire metropolitan Atlanta area and we’re excited to see where it can potentially go.

As we finish up this final blog post of the 2019 program, we would like to thank our advisor, Dr. Angshuman Guin, and the graduate student working on the Georgia Smart Communities Corp, Zixiu Fu, for their endless help and support this summer. We would also like to thank Gwinnett County for providing this project and allowing us to visit one of the fire stations to get insight into intersection approaches that was used to help us when filtering out data points. Lastly, we would like to give a big thanks to the directors of the Civic Data Science program, Ellen and Chris, for their support and giving us the opportunity to participate in this experience. From every day working alongside each other to every project meeting to every intern outing, it’s safe to say it’s been a great ride these past ten weeks at the very least. Thank you all for such an amazing summer, and best of luck with the upcoming school year!

Fun times with our entire group!