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ITS Technical Presentation Series

Automated Signal Performance Measures

ITE Webinar Series Review

October 22, 2014

Jamie Archambeau, PE, PTOEWhitney Nottage, PE, IMSA II

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Jamie Archambeau, PE, PTOE

• Graduated from Michigan Technological University

• 11 years with Atkins• Experience includes traffic

engineering and transportation planning

• Registered PE in Colorado and New Mexico

• Current position: Project Manager

Whitney Nottage, PE, IMSA II

• Graduated from the University of Central Florida

• 6 years with Atkins• Experience includes ITS/ATMS

design, traffic engineering and operations

• Registered PE in Florida, Georgia, and Alabama• Current position: Corridor manager for GDOT’s RTOP

Items to be Covered

• What are Automated Signal Performance Measures (SPMs)?

• History of SPMs

• Planning benefits

• Operations benefits

• Design benefits

• How to get Automated SPMs

• Summary

All graphics and data presented today are pulled from the ITE Automated SPM webinar series presentations and the TIG website

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What are Automated Signal Performance Measures?

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What are Automated SPMs?

• Advanced data displays

• Asset management tool

• Eases field maintenance

• Aids timing and coordination

• Assists planning

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What is high-resolution data?

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Research for developing new

performance measures

Enumeration definitions for

controller events developed

Data was characterized as “High-Resolution

Data”

High-Resolution data collection• Controllers capable of high-resolution data logging

*Manual data collection can be done if communications not available

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Events are

logged

Data files are retrieve

d*

Data is translat

ed

Interpretation

Analysis

Data is archive

d

History of SPMs

History of SPMs

• Used by INDOT, UDOT, MNDOT

• NCHRP accepted

• 2013 focus technology

• More high-resolution data capable controllers

• National Traffic Signal Report Card scoring

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History of SPMs

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Planning benefits

Planning Benefits

• Prioritize signal timing

• Executive reporting

• Justify investments

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Planning Benefits

Planning Benefits

Planning Benefits

Planning Benefits

Planning Benefits

Operations Benefits

Data analysis options

• Phase termination charts

• Coordination diagrams

• Approach speed diagrams

• Turning movement counts

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Operations benefits

• Identifying equipment issues

• Verifying / addressing complaints

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Operations Benefits• EXAMPLE: Identifying broken equipment

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Phases maxing out in the middle of the night

Metric: Purdue Phase Termination

Operations Benefits• COMPLAINT: Cycle is too long

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Metric: Split Monitor

Operations Benefits• COMPLAINT: Not enough green time

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Metric: Split Monitor

Design Benefits

Design benefits• Calculating clearance intervals

• TOD schedule

• Calculate splits

• Fine-tuning plans

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Design Benefits• Calculating clearance intervals

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Metric: Approach speed chart

Design Benefits• Determining TOD schedule

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Metric: Turning movement counts

Design Benefits• Calculating splits with lane-by-lane turning movement

counts

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Metric: Turning movement counts

Design Benefits• Fine-tuning new coordination plans

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Metric: Arrivals on Red

Mainline turns green

Mainline turns yellow, then red

How to get Automated Signal Performance Measures

Infrastructure Required

• Controller

• Communication

• Network equipment

• Detection

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Infrastructure Required

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Infrastructure Required• Communications network

• Interconnect• A server

• A website or interface

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Get .dat files

Translate .dat files

to .csv

Store and

archive data in a database

Infrastructure Required

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Summary

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Summary

• Learn More• Complete system audits• Maintenance• Timing prioritization• Performance reports

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Whitney NottageWhitney.Nottage@atkinsglobal.com(678) 247-2417(407) 506-2565

For more information please contact

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Jamie ArchambeauJamie.archambeau@atkinsglobal.com(720) 475-7097(303) 345-8738

Or visithttp://tig.transportation.orghttp://udottraffic.utah.gov/signalperformancemetricshttp://dotapp7.dot.state.mn.ushttp://docs.lib.purdue.edu/jtrpaffdocs/3/