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Phoenix Adaptive Control Technology Showcase Cobb County Georgia

Phoenix Adaptive Control Technology Showcase Cobb County Georgia. Cobb County Adaptive Traffic Control Brook Martin, Traffic Signal Systems Manager Cobb County Department of Transportation September 8, 2011. About Cobb County Department of Transportation. Cobb County.

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Phoenix Adaptive Control Technology Showcase Cobb County Georgia

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  1. Phoenix Adaptive Control Technology Showcase Cobb County Georgia Cobb County Adaptive Traffic Control Brook Martin, Traffic Signal Systems Manager Cobb County Department of Transportation September 8, 2011

  2. About Cobb County Department of Transportation

  3. Cobb County Transportation Best Practices • 545 Traffic Signals • 400 Direct Connect to TMC • 60 CCTV Cameras • 4 Changeable Message Signs • 250 Miles of Fiber • 1000 Video Detection Cameras • Strengths • Signal Timing • Signal Maintenance Slide 3 – Phoenix Adaptive Control Technology Showcase

  4. SCATS System First Adaptive System in Georgia (2005) Cumberland CID Area I-75/I-285 Interchange 74 Intersections along 8 Corridors 332 Cabinets & 2070L Controllers Single Mode Fiber Communication Video Detection Slide 4 – Phoenix Adaptive Control Technology Showcase

  5. SCATS Special Events Cobb Galleria 30% Traffic Volume Increase Performing Arts Center 80% Traffic Volume Increase Cumberland Mall Seasonal Shopping Summer/Holidays Traffic Demand Reduction Slide 7 – Phoenix Adaptive Control Technology Showcase

  6. SCATS Features Traffic Data Collection Average Daily Traffic Volumes Turning Movement Counts Monitoring Capability Daily Operation & Daily Maintenance Slide 8 – Phoenix Adaptive Control Technology Showcase

  7. SCATS Benefits 24-Hour Coordinated System Detector Triggers Railroad Pre-Emption Operation Reduced Delay/Travel Times Eliminates Retiming Projects Stable Software Good Support Few Complaints Slide 9 – Phoenix Adaptive Control Technology Showcase

  8. SCATS Requirements Signal Maintenance Program Staff Adjustment Period Equipment Cabinet Relays Video Detection Communication Slide 10 – Phoenix Adaptive Control Technology Showcase

  9. SCATS Future Projects Town Center CID Area 75 Intersections I-75/I-575 Corridor Communication Video Detection Slide 11 – Phoenix Adaptive Control Technology Showcase

  10. SCATS Cost CUMBERLAND CID AREA (2005) Total Project - $3.7 Million 271 Cameras – 40% ($22k per intersection) SCATS – 30% ($15k per intersection) Misc. Signal Equipment – 30% TOWN CENTER CID AREA (2011) Total Project - $3.9 Million 358 Cameras - 70% ($36k per intersection) SCATS - 20% ($11k per intersection) Misc. Signal Equipment - 10% Slide 5 – Phoenix Adaptive Control Technology Showcase

  11. SCATS Technology Introduction Bo Gao, P.E., PTOE

  12. SCATS U.S Deployment

  13. Minimizes stops and overall delays • True cycle-by-cycle adaptive control • Cycle • Split • Offset • Optimized parameters implemented in next cycle SCATS Operational Objectives

  14. SCATS Data Requirements • Stop Bar Presence Detection • Inductive Loop • Video Detection • Magnetic Detection • Radar Detection • SCATS Operated by Looking at “Space” Between Vehicles Loop Space Time (secs)

  15. SCATS Functions - Linking • Intersections Can “Marry" or “Divorce" • Married Intersections Operate on a Common Cycle Length & Offset Plan • User Defined Marriage Options: • When CL's are Within 10 sec or • When One-Way Volume Exceeds a Configured Threshold or • When a “Forced” / Continuous Marriage is Required • Algorithms Focus on Minimal Cycle-by-Cycle Adjustments to Stabilize Progression & Coordination

  16. Multiple Communications Options Serial Communications Point-to-Point Point-to-Multipoint Ethernet Communications Copper Fiber Wireless Once per second polling and data exchange Band width - 8 kbps /per controller SCATS Communication Requirements

  17. Central Server/PC Pentium III or above processor 512 Mb RAM 40 GB hard drive SCATS Hardware Requirements

  18. Field Controllers 170 E Controllers Thru Interface Card 2070s Thru Controller Software ATC Controllers Thru Controller Software Eagle M50 Series Econolite ASC/3 SCATS hardware Requirements (Cont’)

  19. Field Cabinets SCATS hardware Requirements (Cont’) 332 Series –170E and 2070 Controllers NEMA TS 1 & TS2 Type 2 – 2070N and ATC Controllers NEMA TS2 Type 1 – 2070N and ATC Controllers

  20. Controller/Cabinet training System training Follow-up training SCATS Training

  21. Ability to Accommodate Holiday Traffic Fluctuation Mother’s Day - Sunday May 13, 2001 Sunday May 20, 2001

  22. Ability to Accommodate Long-term Growth

  23. Intersection Monitoring

  24. Alarm Monitoring

  25. Real Time - Time / Space Diagram with Integrated Detection Actuations & Theoretical Travel Time Monitoring

  26. True Cycle-by-Cycle Adaptive Flexibility on detection, hardware, & communication No Advanced Detection Required Is Not Model Based No Models to Create to Run Adaptive No Models to Update for New Developments or Traffic Condition Changes Provides dynamic coordination along a corridor or corridors Real-time Alarm Monitoring & Notification SCATS Features

  27. QUESTIONS?Brook Martin Cobb County DOT (770)528-4065 brook.martin@cobbcounty.org Bo GaoTransCore(480)551-4657bo.gao@transcore.com

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