A Female-Owned, GDOT Certified Disadvantaged Business Enterprise (DBE)


SEI traffic engineers understand the importance of service integration and multi-modal transportation alternatives that minimize congestion and delays for motorists and support the continued growth of communities. Not many civil engineering firms provide this service in-house concurrent with other design processes. SEI does. Engineering studies of projected traffic flows, future traffic impact, traffic control system optimization and design, transit, pedestrian and bike access, and site-specific parking contribute to the total transportation solutions that SEI can deliver.

Registered professionals with impressive experience in their field, their work is vital in the early planning stages of a development and facilitates the flow of traffic to existing roadway networks.


  • Engineering studies and reports
  • Traffic impact studies
  • Capacity analyses
  • Signal warrant analyses
  • Signal timing and phasing plans
  • Programming traffic signal controllers.
  • GDOT PDP Traffic engineering studies and concept reports


Meet The Team

Here are people behind our success
Teresa Epple, PE, PTOE
Traffic Manager

770.321.3936 x7049

David Turner, EIT
Traffic Specialist

770.321.3936 x7050

Mary Thumaty, EIT
Traffic Specialist

770.321.3936 x3365