Standards in the GCM Gateway Traveler Information System 1512 Standards Workshop Elmhurst, IL October 14-15, 2003 Standards in the GCM Gateway Traveler.

Standards in the GCM Standards in the GCM GatewayGateway Traveler Information SystemTraveler Information System

David Zavattero, ITS Program Manager

1512 Standards Workshop1512 Standards WorkshopElmhurst, ILElmhurst, ILOctober 14-15, 2003October 14-15, 2003

DE LEUW, CATHER * GATEWAY TRAVELER INFORMATION SYSTEM

150 Miles150 Miles

GATEWAY TRAVELER INFORMATION SYSTEM GATEWAY TRAVELER INFORMATION SYSTEM

3 states - IL, IN, WI

16 counties

Over 10 M population

Over 30 stakeholder agencies

100+ of jurisdictions

GCM GATEWAY System GCM GATEWAY System ArchitectureArchitecture

Gateway System FunctionsGateway System FunctionsREAL-TIMEREAL-TIME Data collection Data validation and fusion Data distribution

Types of Data SourcesTypes of Data Sources Traffic Management Centers Emergency Dispatch Centers Weather Sensor Systems DOTs/Tollway

www.gcmtravel.com

Implementation with COTSImplementation 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”

Gateway C2C Interface ComponentsGateway C2C Interface Components

Gateway Data Object Model (GDOM)Gateway Data Object Model (GDOM)

- defines data format- defines data format Gateway Message Oriented Middleware (GMOM) Gateway Message Oriented Middleware (GMOM)

- defines data exchange mechanism- defines data exchange mechanism

All defined in CORBA All defined in CORBA Interface Definition LanguageInterface Definition Language

Gateway Data Object ModelGateway Data Object ModelUses StandardsUses Standards

TMDD – Traffic Management Data DictionaryTMDD – Traffic Management Data Dictionary MS/ETMC2 – Message Sets for External Traffic MS/ETMC2 – Message Sets for External Traffic

Management Center CommunicationManagement Center Communication LRMS – Location Referencing Message SpecificationsLRMS – Location Referencing Message Specifications

Southern California Priority Corridor ShowCase Southern California Priority Corridor ShowCase ProjectProject

GDOM Location ResolutionGDOM Location Resolution

Referencing Methods: Cross Street Mile Post Address Coordinate Ramp Geometry or

SegmentID based

Types: Point Section Lane

Based on the LRMS StandardBased on the LRMS Standard

Data Collection

1 2 3 4 5

10

8/9

7

6

10

GMOM

TMDD

IM 1512

MS/ETMCC 511- ATIS

GDOM

IDL

LRMS

XML

C2C CORBA

Gateway Use of Gateway Use of StandardsStandards

Gateway Message Oriented MiddlewareGateway Message Oriented MiddlewareGMOMGMOM

Defines a Publisher/Subscriber model based data exchange protocol

Based on CORBA Event Service

Uses a sophisticated Mediator Channel

Gateway’s Use of XMLGateway’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

SummarySummary The GCM Gateway TIS is a complex system providing The GCM Gateway TIS is a complex system providing

real-time traveler information to the public and real-time traveler information to the public and agencies in a 3-state metropolitan region.agencies in a 3-state metropolitan region.

Gateway was developed by applying available Gateway was developed by applying available standards.standards.

The C2C CORBA standard is the basis for integration The C2C CORBA standard is the basis for integration and interoperability with a wide variety of systems.and interoperability with a wide variety of systems.

Gateway will be a primary data source for the Illinois, Gateway will be a primary data source for the Illinois, Wisconsin, and Indiana 511 Systems.Wisconsin, and Indiana 511 Systems.