optimized signal timing plans vs. insync ® adaptive traffic signals
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Optimized Signal Timing Plans vs. InSync ® Adaptive Traffic Signals. The Results of a New Microsimulation Study by Aleksandar Stevanovic, Ph.D , PE. RhythmTraffic.com. About the Microsimulation Study. - PowerPoint PPT PresentationTRANSCRIPT
Optimized Signal Timing Plans vs. InSync® Adaptive Traffic Signals
The Results of a New Microsimulation Study by Aleksandar Stevanovic, Ph.D, PE
RhythmTraffic.com
About the Microsimulation Study
Watch the recorded webinar and download the full study at RhythmTraffic.com/StevanvoicReport
Aleks Stevanovic, Ph.D, PEFlorida Atlantic University
Improving Signal Performance
• “It’s easy to improve on a suboptimal timing plan.”• But what about optimized TOD timing plans?• How much better are adaptive signals?• Several field studies of InSync vs. optimized TOD
Why Microsimulation?
• Comprehensive evaluation of performance• Tightly controlled experiments• Abundance of data outputs• Repeatability• Comparability
The Real Corridor Simulated
• Volusia County, Florida• SR-421• 12 intersections• ADT: 25,000-35,000 vehicles
The Real Corridor Simulated• Typical suburban corridor• Difficult to retime• Seasonal and annual variations in traffic flow
• Evacuation route• Divided 4-6 lane facility• Left turns• RR crossing & school zones• 35-50 mph
Direct Comparison in 5 ConditionsRegular traffic conditions
Freeway incident
Inclement weather
Shock trafficFrequent rail preemption
Conducting the Microsimulation
• Collect data • Build model in VISSIM• Calibrate and validate the model• Finally, TEST IT under hundreds and hundreds
of hours of microsimulation using different signal timing strategies
Three sets of TOD plans
1. SS – Single Section method2. MS – Multiple Sections method3. Actual signal timings in field
Direct Comparison
Optimized TOD Timing Plans
Results
Results• Very consistent results – InSync nearly always
better than optimized TOD plans• Significant improvements – stops reduced up
to 33%, delay reduced up to 32%• Confident conclusion that InSync is better than
TOD plans
Results“The results are representative—
and the fact that they are representative will help traffic signal engineers to confidently
make the decision to move toward adaptive traffic control
systems in the future.”- Dr. Stevanovic
Who’s using InSync?80+ public agencies at 991 intersections in 25 states
Learn more about these results
Watch the recorded webinar and download the full study at
RhythmTraffic.com/StevanvoicReport
Questions, comments, more information?Eric Gannaway, Great Lakes Regional Manager
Rhythm [email protected]
(586) 612-8660