Lake County’s Adaptive Signal Control System Jon Nelson, P.E. Bill Eidson, P.E., PTOE Lake County Division of Transportation October 14, 2015
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Lake County’s AdaptiveSignal Control System
Jon Nelson, P.E.Bill Eidson, P.E., PTOE
Lake County Division of Transportation
October 14, 2015
Project Team
Aptakisic Road Project Overview
• County Highway –3.25 miles from IL 83 to US 45/IL 21
• 8 traffic signals• Mix of Land Uses and Traffic• 20,000-25,000 ADT (Aug 2014)
Aptakisic Road Corridor
New technology - 2009
• FHWA releases“Every Day Counts”
• Forward thinking
• History of trying something new.
Funding & Education - 2011
• Congestion Mitigation & Air Quality (CMAQ) application and selection
• Webinars (FHWA & vendors)
• NCHRP review
System Engineering - 2011
• FHWA releases draft SE model for Adaptive Systems
August 2011• FHWA holds SE workshop
September 2011• TES Conference workshop
October 2011
V Diagram
System Engineering - 2012
• One of the first agencies to work with FHWA Resource Center on document following the model (multiple versions reviewed)
System Engineering - 2012
• FHWA releases updated model –August 2012
• System Engineering approved –
October 2012• Concept of Operations• System Requirements• Verification Plan• Validation Plan• System Maintenance
Request for Proposals - 2013
• Worked with IDOT OP&P Agreement signed March 2013
• RFP released May 2013
• Contract with Rhythm Engineering signed August 2013
PS & E
• Designer selected – April 2012– Base plans developed– Project on hold until
system selected• Modified plans to
meet new design• Project let Jan 2014
Cost
• In Sync Cost - $247,000– Includes equipment, configuration, training
• Installation Cost - $336,000 (low bid contract)
– Includes new cabinets & controllers, additional detection, and optimization/validation studies
InSync System
• Processors in Each Cabinet
• Communications Between All Processors
• Designer Sets Parameters and Schedule
• InSync Adapts within Parameters
Installation
• New Cabinets Installed at 5 intersections
• All Controllers Econolite ASC/3
• On Existing PASSAGE Network
• Fiber Optic, Ethernet Based Communications
Installation
Installation
Installation
Installation
Installation
Installation
Detector Mode Operations
Adaptive Operations
Adaptive Operations
Adaptive Operations
80
90
100
110
120
130
140
150
6:00 AM 7:00 AM 8:00 AM 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM
Perio
d/Cy
cle
(Sec
)
Time of Day
TOD Cycle Lengths vs. Adaptive Period LengthsWeekday Conditions
Adaptive Period (6/3/2015) Adaptive Period (6/4/2015) TOD Cycle Length
Adaptive Operations
• Video Clips
Validation Study ResultsBefore vs. Optimized
AM Eastbound PM Westbound
Before
Optimized
AM Eastbound PM Westbound
Validation Study ResultsAdaptive vs. Optimized
Adaptive
Optimized
Validation Study Results
Validation Study Results
TOD Peak
Adaptive Peak
Westbound Through
(PM)Eastbound Through
(AM)
General Observations
• Overall Good Performance• Increased Volumes on Aptakisic Rd.• Public Comments
Corridor Challenges
• Railroad Preemption• Area Construction• Fiber Optic Cable• Congestion at IL 83
Thank You
Jon Nelson, P.E.Bill Eidson, P.E., PTOE
Lake County Division of [email protected]@lakecountyil.gov
847-377-7000
Questions?
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