a distributed smart signal architecture for traffic signal controls
DESCRIPTION
A Distributed Smart Signal Architecture for Traffic Signal Controls. Dustin DeVoe Richard Wall, PhD University of Idaho Moscow, ID USA. Motivation for Distributed Control. Reduce Complexity Enabling technologies Promotes open architecture - PowerPoint PPT PresentationTRANSCRIPT
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A Distributed Smart Signal Architecture for Traffic Signal Controls
Dustin DeVoeRichard Wall, PhD
University of IdahoMoscow, ID USA
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Motivation for Distributed Control• Reduce Complexity• Enabling technologies
– Promotes open architecture– Encourages development of new
technologies and services• Overcome legacy technology
and practices– Less expensive installation– Easier to tune– Reduce misinformation– Improve service to all users
2Univerity of Idaho Engineering
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Research Goals• Identify Suitability
– New control devices– New instrumentation
• Identify Advantages– Access– Safety– Reconfigurable– Upgrades
3Univerity of Idaho Engineering
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Evolution of Traffic Control
Mechanical Switch Traffic Controllers of 19244Univerity of Idaho Engineering
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NEMA TS1 Standard - 1976
Evolution of Traffic Control
5Univerity of Idaho Engineering
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US Approach - Distributed Control?
NEMA TS2 Standard - 1992NEMA TS2 Standard - 1992 6
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Application of Distributed Standard• Implementation of IEEE 1451: Plug and Play
7Univerity of Idaho Engineering
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Current Traffic Control Design
Ethernet on PowerlineCAT 5 Ethernet
Signal Maintenance
Bridge Controller
PED Signal Unit
Ped call button with wireless transreceiver
Traffic Operations
Advanced Controler System
Remote wireless Ped call button
NTCIP Network
PnP Network
Smart Signals Domain
Web Based Configuration Interface8Univerity of Idaho Engineering
NEMA TS2 Controller System
NTCIP: National Transportation Committee for Intelligent Transportation Systems Protocol
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Smart Signals Traffic Control Design
Ethernet on PowerlineCAT 5 Ethernet
Signal Maintenance
Bridge Controller
PED Signal Unit
Ped call button with wireless transreceiver
Traffic Operations
Advanced Controler System
Remote wireless Ped call button
NTCIP Network
PnP Network
Smart Signals Domain
9Univerity of Idaho Engineering
Advanced Controller System
NEMA TS2 Controller System
NTCIP: National Transportation Committee for Intelligent Transportation Systems Protocol
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Communication of Information
Pedestrian Call
Plug and Play
Network
Traffic Controller
NTCIP – Traffic Communication Standard
Encrypted Power-line Ethernet Communications10Univerity of Idaho Engineering
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ResultsAble to implement IEEE 1451
Allowed dynamic signalingEasy implementation of innovative devicesEnabled Plug n’ Play
Resolved inaccuracy issues with distribution of information
Required translation of standardsDid not comply with accepted industry practicesProprietary interface
11Univerity of Idaho Engineering
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Project Progression
12Univerity of Idaho Engineering
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Work in Progress
13Univerity of Idaho Engineering
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ConclusionIncreased flow of information can improve
level of service at the signalDistributed architecture increases system
functionality IEEE 1451 is implementable for an traffic
control environmentRequired translation of information between
protocols
14Univerity of Idaho Engineering
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Future Work• Network Security
– Intrusion– Reliability– Performance recording
• Educating the Industry • Field Tests• Human Factors• Smart Vehicle Signals• Integrate with Federal Initiatives
15Univerity of Idaho Engineering
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Long Term Goals
16Univerity of Idaho Engineering