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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
    Get people to their destinations 25% faster by eliminating stops, reducing wait time, and increasing travel speeds.
  • Delay
    Spend over 40% less time waiting at intersections.
  • Stops
    Make 30-40% fewer stops, decreasing wear on the road and tires and resulting in a cost savings for drivers and cities.
  • Emissions
    Produce 20% fewer harmful emissions and improve air quality by reducing stops and idling.
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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. 

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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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