The City of Portland reduces travel times at Maine’s busiest intersection by 20%

The Surtrac adaptive traffic signal control technology was originally developed in the Robotics Institute at Carnegie Mellon University, and is now offered by spin-off company Rapid Flow Technologies. Using real-time data and artificial intelligence (AI), Surtrac works well in more predictable suburban arterial environments, but it is also ideal for more complex networks, including grids and closely spaced intersections, where competing traffic flows require service from different directions or where flows are unpredictable and change in ways that makes time-of-day patterns obsolete very quickly. These were the very conditions present at Morrill’s Corner, and why Surtrac has been so effective in reducing congestion there. As Portland’s population continues to grow, the traffic conditions at Morrill’s Corner will evolve and change over time. Surtrac naturally adapts to these changes using its second-by-second AI optimization.