Technical Report Documentation PageAuthor's Title PageDisclaimerAcknowledgmentsTable of ContentsList of FiguresList of TablesIntroductionUnderstanding Current ATMS DeploymentsQuestionnaire and Phone InterviewExisting ATMS Communications EnvironmentFuture Deployments in Existing ATMS EnvironmentsITS Project Planning and ControlVideo Streams of Roadway ConditionsTrends in Information SharingLessons LearnedFuture DirectionsBackgroundTxDOT Core Technology ArchitectureSummary of Core Technology Architecture RequirementsATMS SubsystemsATMS DeploymentCenter-to-Center (C2C)Impacts of Other Communication DirectionsNational StandardsImpacts on TxDOT ATMS and CommunicationsCommunications Industry TrendsImpacts on TxDOT ATMS and Communications Vehicle-Infrastructure Integration (VII)Current Activity Architecture Roadside Traffic Management Centers Impacts on TxDOT ATMS and CommunicationsCommunication Needs for External PartnersCurrent Practices for TxDOT TMC Information SharingInformation Service Providers MediaExternal AgenciesThe Future of External Information SharingGeneral Public Media Information Service Providers Other Agencies A Conceptual Network Model for ITS DeploymentsITS within the TxDOT Core Technology ArchitectureConceptual Model for ITS DeploymentsTxDOT Business Network ITS Business Network ITS Field Network ITS Partner Network Outside Network Case Study - El Paso DistrictEl Paso District Business NetworkEl Paso District ITS Business NetworkEl Paso District ITS Field NetworkEl Paso District ITS Partner NetworkEl Paso District ITS Outside NetworkSummary and ConclusionsProject ReviewConceptual ModelApplication of Conceptual Model to Case StudyConclusionsReferencesAppendix: Questionnaire on Existing ATMS DeploymentsTechnical Report Documentation Page 1. Report No. FHWA/TX-08/0-5586-1 2. Government Accession No. 3. Recipient's Catalog No. 5. Report Date November 2007 Published: February 2008 4. Title and Subtitle COMMUNICATIONS TRENDS AND THEIR IMPACT ON TXDOT ITS DEPLOYMENTS 6. Performing Organization Code 7. Author(s) Robert E. Brydia, Leonard G. Ruback, Rajat Rajbhandari, Jeremy D. Johnson, and Edward. Brackin 8. Performing Organization Report No. Report 0-5586-1 10. Work Unit No. (TRAIS) 9. Performing Organization Name and Address Texas Transportation Institute The Texas A&M University System College Station, Texas 77843-3135 11. Contract or Grant No. Project 0-5586 13. Type of Report and Period Covered Technical Report: September 2006 - August 2007 12. Sponsoring Agency Name and Address Texas Department of Transportation Research and Technology Implementation Office P.O. Box 5080 Austin, Texas 78763-5080 14. Sponsoring Agency Code 15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Next Generation Communications Architecture for TxDOT ATMS URL: http://tti.tamu.edu/document/0-5586-1.pdf 16. Abstract The Advanced Traffic Management System (ATMS) from the Texas Department of Transportation (TxDOT) has been used in multiple Intelligent Transportation System (ITS) deployments across the state. ATMS utilizes a physical communications infrastructure that provides connections to field devices, provides video streams, and enables information flow to other centers, the media and/or the public. Several trends have an impact on the design and operation of this physical infrastructure, including: • development of the next generation software interfaces for ATMS, • development of a core technology architecture for TxDOT, • communication of industry trends, and • needs of information providers. This project documented the current state of ATMS deployments, analyzed the impacts of the above trends, and developed a conceptual model for an ATMS network architecture to be used in future ITS deployments. This architecture is discussed in terms of services, security, and areas of responsibility. 17. Key Words Intelligent Transportation Systems (ITS), Advanced Transportation Management System (ATMS), Communications, Information Technology 18. Distribution Statement No restrictions. This document is available to the public through NTIS: National Technical Information Service Springfield, Virginia 22161 http://www.ntis.gov 19. Security Classif.(of this report) Unclassified 20. Security Classif.(of this page) Unclassified 21. No. of Pages 90 22. Price Form DOT F 1700.7 (8-72) Reproduction of completed page authorizedCOMMUNICATIONS TRENDS AND THEIR IMPACT ON TXDOT ITS DEPLOYMENTS by Robert E. Brydia Associate Research Scientist Texas Transportation Institute Leonard G. Ruback Research Scientist Texas Transportation Institute Rajat Rajbhandari Assistant Research Scientist Texas Transportation Institute Jeremy D. Johnson Engineering Research Associate Texas Transportation Institute and Edward. Brackin Assistant Research Specialist Texas Transportation Institute Report 0-5586-1 Project 0-5586 Project Title: Next Generation Communications Architecture for TxDOT ATMS Performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration November 2007 Published: February 2008 TEXAS TRANSPORTATION INSTITUTE The Texas A&M University System College Station, Texas 77843-3135v DISCLAIMER This research was performed in cooperation with the Texas Department of Transportation (TxDOT) and the Federal Highway Administration (FHWA). The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official view or policies of the FHWA or TxDOT. This report does not constitute a standard, specification, or regulation. The researcher in charge was Robert E. Brydiavi ACKNOWLEDGMENTS This project was conducted in cooperation with TxDOT and FHWA. The authors gratefully acknowledge the contributions of numerous persons who made the successful completion of this project possible. Director, Office of Primary Responsibility • Carlos A Lopez, P.E., Traffic Operations Division, TxDOT Project Director • Steve Barnett, Traffic Operations Division, TxDOT Project Coordinator • Al Kosik, Traffic Operations Division, TxDOT Project Monitoring Committee • Brian Burk, Austin District, TxDOT • Ron Fuessel, Traffic Operations Division, TxDOT • Mike Kieke, Information Services