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Standards in the GCM Gateway Traveler Information System David Zavattero, ITS Program Manager 1512 Standards Workshop E

Standards in the GCM Gateway Traveler Information System David Zavattero, ITS Program Manager 1512 Standards Workshop Elmhurst, IL October 14-15, 2003. 3 states - IL, IN, WI 16 counties Over 10 M population Over 30 stakeholder agencies 100+ of jurisdictions.

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Standards in the GCM Gateway Traveler Information System David Zavattero, ITS Program Manager 1512 Standards Workshop E

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  1. Standards in the GCM GatewayTraveler Information SystemDavid Zavattero, ITS Program Manager1512 Standards WorkshopElmhurst, ILOctober 14-15, 2003

  2. 3 states - IL, IN, WI • 16 counties • Over 10 M population • Over 30 stakeholder agencies • 100+ of jurisdictions

  3. GCM GATEWAY System Architecture

  4. Gateway System Functions REAL-TIME • Data collection • Data validation and fusion • Data distribution Types of Data Sources • Traffic Management Centers • Emergency Dispatch Centers • Weather Sensor Systems • DOTs/Tollway

  5. www.gcmtravel.com

  6. Implementation with COTS • Programming Languages: Java/C++/html/… • Database Management System: Versant Object-oriented database • OS platforms: UNIX/Windows • C2C and internal Inter-Process Communication: Iona CORBA “Orbs”

  7. Gateway C2C Interface Components • Gateway Data Object Model (GDOM) - defines data format • Gateway Message Oriented Middleware (GMOM) - defines data exchange mechanism • All defined in CORBA • Interface Definition Language

  8. Gateway Data Object ModelUses Standards • TMDD – Traffic Management Data Dictionary • MS/ETMC2 – Message Sets for External Traffic Management Center Communication • LRMS – Location Referencing Message Specifications • Southern California Priority Corridor ShowCase Project

  9. GDOM Location Resolution Based on the LRMS Standard Referencing Methods: • Cross Street • Mile Post • Address • Coordinate • Ramp • Geometry or SegmentID based Types: • Point • Section • Lane

  10. Data Collection XML TMDD 511- ATIS MS/ETMCC 7 LRMS IM 1512 2 3 4 5 1 Gateway Use of Standards C2C CORBA 6 IDL 10 10 GDOM GMOM 8/9

  11. Gateway Message Oriented MiddlewareGMOM • Defines a Publisher/Subscriber model based data exchange protocol • Based on CORBA Event Service • Uses a sophisticated Mediator Channel

  12. Gateway’s Use of XML • Gateway now publishing real-time data in XML Schema file. • XML data file made available to external users via protected WebPages. • Gateway XML Schema similar to J2354 ATIS standard

  13. Summary • The GCM Gateway TIS is a complex system providing real-time traveler information to the public and agencies in a 3-state metropolitan region. • Gateway was developed by applying available standards. • The C2C CORBA standard is the basis for integration and interoperability with a wide variety of systems. • Gateway will be a primary data source for the Illinois, Wisconsin, and Indiana 511 Systems.

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