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1 Report No 2 Government Accession No Technical Report Documentation Page 3 Recipient s Catalog No FHWA TX 08 0 5586 1 4 Title and Subtitle 5 Report Date COMMUNICATIONS TRENDS AND THEIR IMPACT ON TXDOT ITS DEPLOYMENTS November 2007 Published February 2008 6 Performing Organization Code 7 Author s 8 Performing Organization Report No Robert E Brydia Leonard G Ruback Rajat Rajbhandari Jeremy D Johnson and Edward Brackin Report 0 5586 1 9 Performing Organization Name and Address 10 Work Unit No TRAIS Texas Transportation Institute The Texas A M University System College Station Texas 77843 3135 11 Contract or Grant No 12 Sponsoring Agency Name and Address 13 Type of Report and Period Covered Texas Department of Transportation Research and Technology Implementation Office P O Box 5080 Austin Texas 78763 5080 Technical Report September 2006 August 2007 Project 0 5586 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 18 Distribution Statement Intelligent Transportation Systems ITS Advanced Transportation Management System ATMS Communications Information Technology 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 20 Security Classif of this page 21 No of Pages Unclassified Unclassified 90 Form DOT F 1700 7 8 72 Reproduction of completed page authorized 22 Price COMMUNICATIONS 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 3135 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 Brydia v 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 Division TxDOT Bradley Miller Waco District TxDOT Charles Owen Traffic Operations Division TxDOT Research Engineer Wade Odell P E Research and Technology Implementation Office TxDOT Contract Manager Sandra Kaderka Research and Technology Implementation Office TxDOT vi TABLE OF CONTENTS Page List of Figures ix List of Tables x INTRODUCTION 1 UNDERSTANDING CURRENT ATMS DEPLOYMENTS 3 QUESTIONNAIRE AND PHONE INTERVIEW 3 EXISTING ATMS COMMUNICATIONS ENVIRONMENT 4 FUTURE DEPLOYMENTS IN EXISTING ATMS ENVIRONMENTS 7 ITS PROJECT PLANNING AND CONTROL 9 VIDEO STREAMS OF ROADWAY CONDITIONS 11 TRENDS IN INFORMATION SHARING 12 LESSONS LEARNED 14 FUTURE DIRECTIONS 17 BACKGROUND 17 TXDOT CORE TECHNOLOGY ARCHITECTURE 18 SUMMARY OF CORE TECHNOLOGY ARCHITECTURE REQUIREMENTS 19 ATMS SUBSYSTEMS 20 ATMS DEPLOYMENT 22 CENTER TO CENTER C2C 24 IMPACTS OF OTHER COMMUNICATION DIRECTIONS 27 NATIONAL STANDARDS 28 Impacts on TxDOT ATMS and Communications 28 COMMUNICATIONS INDUSTRY TRENDS 29 Impacts on TxDOT ATMS and Communications 29 VEHICLE INFRASTRUCTURE INTEGRATION VII 30 Current Activity 31 Architecture 32 Roadside 34 Traffic Management Centers 36 Impacts on TxDOT ATMS and Communications 37 COMMUNICATION NEEDS FOR EXTERNAL PARTNERS 39 CURRENT PRACTICES FOR TXDOT TMC INFORMATION SHARING 40 Information Service Providers 40 Media 40 External Agencies 42 THE FUTURE OF EXTERNAL INFORMATION SHARING 42 General Public 43 Media 43 Information Service Providers 43 Other Agencies 44 A CONCEPTUAL NETWORK MODEL FOR ITS DEPLOYMENTS 45 ITS WITHIN THE TXDOT CORE TECHNOLOGY ARCHITECTURE 45 CONCEPTUAL MODEL FOR ITS DEPLOYMENTS 46 TxDOT Business Network 48 vii ITS Business Network 49 ITS Field Network 50 ITS Partner Network 51 Outside Network 52 CASE STUDY EL PASO DISTRICT 55 EL PASO DISTRICT BUSINESS NETWORK 55 EL PASO DISTRICT ITS BUSINESS NETWORK 56 EL PASO DISTRICT ITS FIELD NETWORK 57 EL PASO DISTRICT ITS PARTNER NETWORK 59 EL PASO DISTRICT ITS OUTSIDE NETWORK 61 SUMMARY AND CONCLUSIONS 63 PROJECT REVIEW


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