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Intelligent Traffic Signal Control

Unlike other systems which may take minutes to respond to changes in traffic, Surtrac adapts in real-time to changing traffic by optimizing traffic flows every second. Surtrac coordinates traffic flows on complex grids, not just on arterials or corridors with much less dynamic traffic patterns. Surtrac optimizes for many modes of travel, keeping vehicles, cyclists, pedestrians, and transit moving and safe.

Surtrac is proven in the field to yield significant improvement over conventional traffic signal timing and other adaptive systems. Travel times have been reduced by 25%, time spent waiting at signals by 40%, stops by 30%, and emissions by 20%.

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  • Travel Time
    Reduced 25% by eliminating stops and reducing wait time, not just by increasing travel speeds which can negatively impact safety.
  • Delay
    Over 40% less time waiting at intersections.
  • Stops
    30-40% fewer stops, means less wear and tear on roads and tires translating into direct cost savings for drivers and cities.
  • Emissions
    By reducing stops and idling, vehicles produce fewer harmful emissions which improves air quality.
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What is Surtrac?

Surtrac is an innovative approach to real-time traffic signal control, combining research from artificial intelligence and traffic theory. Surtrac optimizes the performance of signals for the traffic that is actually on the road, improving traffic flow for both urban grids and corridors and leading to less waiting, reduced congestion, shorter trips, less pollution, and happier drivers.

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How It Works

Surtrac is an AI/robotic system that treats the intersection control challenge in a whole new way - as a single machine scheduling problem. The technology is then able to schedule downstream neighbors to give visibility of future input jobs.

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Benefits

Surtrac is proven to bring cities and their pedestrians the following benefits:

  • Time savings with real-time traffic control
  • Money savings with scalable deployments
  • Air quality improvement through reduced emissions
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Implementation

Because Surtrac is a decentralized system, groups of intersections can be added to the network over time, reducing the cost and implementation risk of having to transition an entire city grid at once. 

MORE ABOUT IMPLEMENTATION
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Multi-Modal and Connected Travelers

Surtrac is designed to optimize for all modes of travel, including:

  • Pedestrians
  • Bicycles
  • Transit
  • Connected Travelers and Connected & Autonomous Vehicles (CAV)
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