Intelligent Traffic Signals

Surtrac is the most advanced adaptive traffic signal control system on the market today. Using patented technology developed in the Robotics Institute at Carnegie Mellon University, Surtrac combines state of the art research in artificial intelligence and traffic theory.

Surtrac provides a true real-time response to changing traffic conditions, optimizing traffic flow second-by-second, unlike other adaptive systems which may take minutes to respond to changes in traffic. Surtrac coordinates traffic flows on grids, not just on corridors like conventional systems. Surtrac also optimizes traffic for many modes of travel, keeping vehicles, cyclists, pedestrians, and transit moving.

Surtrac is proven in the field to yield drastic improvement over conventional traffic signal timing. Travel times are reduced 25%, time spent waiting at signals is down 40%, stops are down over 30%, and emissions are reduced more than 20%.


Travel Time

Reduced 25% by eliminating stops and reducing wait time, not by increasing travel speeds.



Over 40% less time waiting at intersections leads to less delay.



30-40% fewer stops, means less wear and tear on roads and tires



By reducing stops and idling, vehicles produce fewer harmful emissions, improving air quality.


Saving time with real-time control

Saving time with real-time control

Instead of basing signal timings on traffic models that are minutes, days, or years old, Surtrac optimizes signal timings second by second based on the current traffic on the road. This true real-time response to traffic allows Surtrac to dynamically coordinate signals as traffic conditions change.

Saving money with scalable deployments

Saving money with scalable deployments

Surtrac is a completely distributed system, designed to be robust to the uncertainties of traffic control. With no centralized computational bottlenecks, Surtrac deployments can easily grow incrementally to extremely large networks, and as new intersections are added, performance at existing Surtrac intersections will continue to improve.

Improving air quality by reducing emissions

Improving air quality by reducing emissions

Idling vehicles are a major contributor to air pollution. Making signal networks smarter with Surtrac means less time spent waiting at intersections and reduced emissions, improving the quality of our air.

Contact Us

100 Sheridan Square
Second Floor
Pittsburgh, PA 15206
info at
+1 412-301-5508