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IntelliDrive Research Signal Phase & Timing ( SPaT ) and Related Messages

IntelliDrive Research Signal Phase & Timing ( SPaT ) and Related Messages. Edward Fok Office of Technical Service San Francisco. Research Goal. Define an open interface for two-way communication of traffic signal information between traffic signal controller and a mobile device.

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IntelliDrive Research Signal Phase & Timing ( SPaT ) and Related Messages

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  1. IntelliDrive ResearchSignal Phase & Timing (SPaT)and Related Messages Edward Fok Office of Technical Service San Francisco

  2. Research Goal • Define an open interface for two-way communication of traffic signal information between traffic signal controller and a mobile device

  3. Purpose of SPaT • Traffic signal control information that conveys the current movement state of each active phase in the system will provide the capability for: • Safetyapplications such as warnings and alerts for crash avoidance • Mobility applications to enable dynamic and efficient traffic management • Environment applications that allow savings in fuel consumption and reduction in CO2 emissions.

  4. Related Messages • Map data that conveys the gemetric layout of the associated intersection • Positioning data that allows the correlation of the signal and map data

  5. SPaT Operation Overview DSRC radio On Board Equipment (OBE) SPaT Processor Positioning/ GPS Map storage/ GID Traffic Control Device MAP/GID GPSC SPaT

  6. Open Interface – Concept Traffic Signal Controller Interface to be defined NEMA TS-X NTCIP 1202 2070 Mobile Equipment ATC Others SAE J2735 Two-way communication

  7. Desirable Characteristics • Minimize the need for new standard objects,or ideally: no new objects. • Traffic Controller standard may reference SAE J2735 • SAEJ2735 reference NTCIP 1202 • Updates expected for both Standards

  8. Process for Development • Review of relevant Past and Current research • Creation of user forums • Traffic Control Industries • Modal Partners • Vehicle and Tier-1 OEM • Concept of Operation Development • Prototype Development • Finalize Interface

  9. CY 2012 CY 2010 CY 2011 1Q 1Q 1Q 2Q 2Q 2Q 3Q 3Q 3Q 4Q 4Q 4Q Contract Award Issue SOW Track 1 Project Mgmnt PMP & SEMP Rsrch/ Lit Rev Subject Matter Expert Workshop Track 2 Cap Anal Con Ops ConOps Walkthrough Concept Definition Reqs Update Requirements Track 3 RequirementsWalkthrough Rqrmnts Develop (2) Prototypes Integrate SPaT with Map, Positioning, & Security Draft Interface Definition Finalize Interface Definition Build Environment for prototype evaluation Track 4 Signal Phase and Timing Research Roadmap (planned) Review Draft with Standards Stakeholders Prototype Develop Prototypes with additional vendors Track 5 Test initial Prototypes Additional Prototype Testing Safety Pilot Model Deployment Testing

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