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August 28, 2013

WIS100 InSync Adaptive Signal Study. A full-service, multidisciplinary transportation firm dedicated to superior quality in meeting our client’s vision. August 28, 2013. 1. Project Vicinity. Project Area. Six Signalized Intersections: Walnut Road North Avenue Meinecke Avenue

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August 28, 2013

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  1. WIS100 InSync Adaptive Signal Study A full-service, multidisciplinary transportation firm dedicated to superior quality in meeting our client’s vision. August 28, 2013 • 1

  2. Project Vicinity

  3. Project Area • Six Signalized Intersections: • Walnut Road • North Avenue • Meinecke Avenue • Middle Mall Entrance • Center Street • Burleigh Street

  4. Signal System Prior to InSync • Actuated-coordinated signal system • Optimized in December 2012 using Synchro software • Free mode outside of TOD Operation Signal System Operation

  5. InSync System • Real-time adaptive signal system • WIS 100 intersections combined video detection system with existing stop bar detection devices • Measures and responds to delay and demand at each intersection • Creates green tunnels to send platoons of vehicles through corridor

  6. Goals for InSync System • Adaption of the system to variable traffic patterns and conditions • Travel time and stop reduction on the main line • Delay reduction on side streets and left turns

  7. Lessons Learned • Establish a team of experts in the areas of system design, purchasing, communication/IT, installation, operation, and evaluation • Maintaining and encouraging proactive communication between project team members to evaluate progress and identify potential challenges • The IT network and programming was critical. • Review and shop testing of the components to be installed • Documentation of the process and preparation for interested parties to seek information from WisDOT • Involvement and working closely with Rhythm Engineering’s engineers after installation to calibrate and review operations was critical.

  8. Data Collection Efforts • Floating Car Travel Time Runs • Intersection Delay Studies • Intersection Turning Movement Counts • Fuel & Emissions • Bluetooth

  9. Effects on Data Collection • Construction on WIS 100 at south end of project • Construction on Capitol Drive • Weather Conditions • Holiday Shopping Season (December)

  10. Travel Time Run Stops & Delay Study Stops

  11. Fuel Economy & Emissions

  12. Travel Time Runs & Bluetooth Travel Times

  13. Bi-Directional Decrease in Travel Time -18%

  14. Floating Car Travel Time Run Average Profiles

  15. Increase in Travel Time + 12%

  16. Weekday Traffic Counts

  17. Saturday Traffic Counts

  18. Side Streets North Avenue Burleigh Street • Bluetooth Travel Times: • 10 s increase (14%), WB, PM • No other increases observed • Bluetooth Travel Times: • 5 s increase (7%), WB, AM • 19 s increase (19%), EB, PM • 6 s increase (8%), WB, PM • Delay Study Measured Delay: • 8 s decrease (-17%), WB, Midday • No change, EB, PM • Delay Study Measured Delay: • 7 s increase (22%), WB, AM Midday Decrease PM Increase PM Increase AM & PM Increases No Change Observed

  19. Illustrative Benefit to Cost Analysis • Values for Benefit Calculations: • 33,500 total trips per day • Average travel time savings: 28 seconds/trip • Average fuel savings: 0.008 gallons/trip • Average price of gallon of gasoline: $3.605 • Value to time for auto drivers: $10.34 • Value of time for commercial drivers: $22.78 • Real discount rate for economic analysis calculations: 2.50%

  20. Conclusions • Bi-directional decreases in travel time during the PM period • Decreased travel times in the SB direction all three periods studied • Decreased delay and number of stops on WIS 100 during travel time runs • 12% improvement in fuel economy and corresponding improvements in calculated emissions • Minor changes (minimal impact) in travel time and delay on side streets

  21. Measurement of Goals for InSync System • Adaption of the system to variable traffic patterns and conditions • Improvements despite construction & some volume increases • Travel time and stop reduction on the main line • Bi-directional decrease in travel time and stops, PM period • Delay reduction on side streets and left turns • Some increase in side street delay, minimal overall • Not enough data on left turns • More data collection recommended

  22. Recommendations & Next Steps • Checking of results after construction on WIS 100 is completed • Additional data collection and analysis • Additional traffic count times (weekday peaks and weekends) • Additional side street delay studies • Comparison of InSync system counts to manual traffic counts • Analysis of intersecting arterials (dual coordination) • Automated, continuous data collection and reporting of performance measures via a central system

  23. Questions & Discussion ?

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