Work Zone ITS Devices - wsdot.wa.govJan 31, 2008 · Automated Flagger Assistance Device (AFAD)...
Transcript of Work Zone ITS Devices - wsdot.wa.govJan 31, 2008 · Automated Flagger Assistance Device (AFAD)...
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Work Zone ITS DevicesWork Zone ITS DevicesThe WSDOT ExperienceThe WSDOT Experience
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LowLow--Tech Work Zone DevicesTech Work Zone Devices
•• Portable Changeable Message SignsPortable Changeable Message Signs•• Portable Highway Advisory Radio Portable Highway Advisory Radio •• Over height DetectionOver height Detection•• Intrusion AlarmsIntrusion Alarms•• Portable Signal SystemsPortable Signal Systems•• Automated Flagger Assistance DevicesAutomated Flagger Assistance Devices
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Portable HAR Systems
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Overheight Vehicle Detection
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Intrusion Alarms
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Portable Signal System
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Automated Flagger Assistance Device (AFAD)
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Intelligent DevicesIntelligent Devices
•• Smart work zone devicesSmart work zone devices•• Dynamic Lane MergeDynamic Lane Merge•• Queue Detection SystemQueue Detection System•• Travel Time Estimation SystemTravel Time Estimation System•• Speed trailers Speed trailers •• Variable Speed Limit Variable Speed Limit •• Work Zone Photo EnforcementWork Zone Photo Enforcement
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Smart Work Zone – Portable Traffic Management System
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Video TrailerVideo Trailer
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Dynamic Lane Merge System
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Queue Detection System
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Typical QueueTypical Queue
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Drivers see this first ...Drivers see this first ...
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Illinois DOT – I64 Add Lane Project – Travel Management System
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Travel Time Estimation System
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Illinois DOT I-55 Bridge ConstructionReal Time Work Zone Traffic control system
8 Portable traffic sensors•17 remotely controlled DMS •4 Portable camera systems•All systems linked to central base
Arizona Route 68 License Plate reader used to measure travel time
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Oregon DOT –Travel Time Monitoring Project
•Monitor travel time through theWork zone using side-fired sensors and AVI transponders•Measure delay through the work zone•Measure traffic volumes, speed, roadway occupancy and patterns•Estimate corridor travel time and provide this information to drivers
Project Goals
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iConeiCone
•• Easily deployable and movableEasily deployable and movable•• Provides speed dataProvides speed data•• Locates itself using GPSLocates itself using GPS•• Available via the Internet in Available via the Internet in realtimerealtime•• Implications of devices like this:Implications of devices like this:•• Easier to collect WZ performance dataEasier to collect WZ performance data•• Can be used in short duration situationsCan be used in short duration situations•• Still being evaluated by WSDOTStill being evaluated by WSDOT
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Speed Display Trailer – used on WSDOT/WSP 555 Pilot project
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WSDOT ITS Application Top 3 Priorities
•Dynamic Lane Merge System - The system is intended to improve work zone capacity and reduce crashes, (studies show minimal improvement) but it’s greatest value may be the merge control or direction it provides drivers approaching the lane closure.
•Queue Detection System - a portable device that utilizes a microwave detector that is able to detect changes in traffic flow, and send out an alarm to advance signs to warn motorists if a backup is forming.
•Work Zone Traffic Management - this concept can employ several technologies and is slowly starting to move ahead on some projects, but requires some detailed advance planning and design. A practical example might be to combine temporary work zone ITS with permanent ITS managed through the region TMC.
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Questions?Questions?