Synthesis of Txdot Uses of Real-Time Commercial Traffic Data
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Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. FHWA/TX-12/0-6659-1 4. Title and Subtitle 5. Report Date SYNTHESIS OF TXDOT USES OF REAL-TIME September 2011 COMMERCIAL TRAFFIC DATA Published: January 2012 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Dan Middleton, Rajat Rajbhandari, Robert Brydia, Praprut Report 0-6659-1 Songchitruksa, Edgar Kraus, Salvador Hernandez, Kelvin Cheu, Vichika Iragavarapu, and Shawn Turner 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) Texas Transportation Institute The Texas A&M University System 11. Contract or Grant No. College Station, Texas 77843-3135 Project 0-6659 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Texas Department of Transportation Technical Report: Research and Technology Implementation Office September 2010–August 2011 P. O. Box 5080 14. Sponsoring Agency Code Austin, Texas 78763-5080 15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Synthesis of TxDOT Uses of Real-Time Commercial Traffic Routing Data URL: http://tti.tamu.edu/documents/0-6659-1.pdf 16. Abstract Traditionally, the Texas Department of Transportation (TxDOT) and its districts have collected traffic operations data through a system of fixed-location traffic sensors, supplemented with probe vehicles using transponders where such tags are already being used primarily for tolling purposes and where their numbers are sufficient. In recent years, private providers of traffic data have entered the scene, offering traveler information such as speeds, travel time, delay, and incident information. The question that this research project answered was the following: Whether TxDOT could and should utilize the data offerings by private sector providers to supplement its own data collection efforts and, if so, how. The research also determined the following: • What data are available from private providers (either free or for purchase). • What other states are doing with data from private providers. • Opinions of TxDOT decision makers on the utility of these data sources. • How the data should be normalized, combined, and delivered for TxDOT or other public sector partner agency use. • A recommended path for implementing the TxDOT response. 17. Key Words 18. Distribution Statement Private Sector Traffic Data, SAFETEA0-LU Section No restrictions. This document is available 1201 Requirements, Point Sensor Data to the public through NTIS: National Technical Information Service Alexandria, Virginia 22312 http://www.ntis.gov 19. Security Classif. (of this report) 20. Security Classif. (of this page) 21. No. of Pages 22. Price Unclassified Unclassified 122 Form DOT F 1700.7 (8-72) Reproduction of completed page authorized SYNTHESIS OF TXDOT USES OF REAL-TIME COMMERCIAL TRAFFIC DATA by Dan Middleton, Ph.D., P.E. Rajat Rajbhandari, Ph.D., P.E. Program Manager Associate Research Engineer Texas Transportation Institute Texas Transportation Institute Robert Brydia Praprut Songchitruksa, Ph.D. Research Scientist Associate Research Engineer Texas Transportation Institute Texas Transportation Institute Edgar Kraus, P.E. Salvador Hernandez, Ph.D. Associate Research Engineer Assistant Professor Texas Transportation Institute University of Texas at El Paso Kelvin Cheu, Ph.D., P.E. Vichika Iragavarapu Associate Professor Assistant Transportation Researcher University of Texas at El Paso Texas Transportation Institute Shawn Turner, P.E. Senior Research Engineer Texas Transportation Institute Report 0-6659-1 Project 0-6659 Project Title: Synthesis of TxDOT Uses of Real-Time Commercial Traffic Routing Data Performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration September 2011 Published: January 2012 TEXAS TRANSPORTATION INSTITUTE The Texas A&M University System College Station, Texas 77843-3135 DISCLAIMER The contents of this report reflect the views of the authors, who are solely responsible for the facts and accuracy of the data, the opinions, and the conclusions presented here. The contents do not necessarily reflect the official view or policies of the Texas Department of Transportation (TxDOT) or the Federal Highway Administration (FHWA). This report does not constitute a standard or regulation, and its contents are not intended for construction, bidding, or permit purposes. The use of names or specific products or manufacturers listed herein does not imply endorsement of those products or manufacturers. The engineer in charge of the project was Dan Middleton, P.E. #60764. The United States Government and the State of Texas do not endorse products or manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the object of this report. v ACKNOWLEDGMENTS This project was conducted in cooperation with the Texas Department of Transportation and the Federal Highway Administration. The authors gratefully acknowledge the contributions of several persons who made the successful completion of this research possible. This especially includes the project director, Ms. Cynthia Flores. Special thanks are also extended to the following members of the project monitoring committee: Mr. David Fink, Mr. Alex Power, Mr. Mike Wulczyn, Mr. Frank Espinosa, and Mr. Wade Odell of the Texas Department of Transportation. vi TABLE OF CONTENTS Page 1. Introduction ............................................................................................................... 1 1.1 Overview ............................................................................................................... 1 1.2 Background ........................................................................................................... 1 1.3 Objectives .............................................................................................................. 1 1.4 Organization of the Report .................................................................................... 2 2. Refine Work Plan ...................................................................................................... 3 2.1 Introduction ........................................................................................................... 3 2.2 Project Monitoring Committee .............................................................................. 3 2.3 Research Team ...................................................................................................... 3 2.4 Kick-Off Meeting Summary ................................................................................. 4 2.5 Action Items Based on the Kick-Off Meeting ...................................................... 5 3. Gather Relevant Information .................................................................................... 7 3.1 Introduction ........................................................................................................... 7 3.2 Literature Review and Internet Search .................................................................. 7 3.3 Assessing Traffic Information Quality ................................................................ 38 3.4 Survey of Private Data Providers and Consumers .............................................. 39 4. Provide Feedback to TxDOT .................................................................................. 55 4.1 Introduction ......................................................................................................... 55 4.2 Methodology ....................................................................................................... 55 4.3 Documentation of TxDOT Input ......................................................................... 57 5. Develop Opportunity Matrix ................................................................................... 65 5.1 Introduction ......................................................................................................... 65 5.2 SAFETEA-LU Section 1201 ............................................................................... 66 5.3 Strengths and Weaknesses of Each Method ........................................................ 67 5.4 Comprehensive Opportunity Matrix ................................................................... 74 6. Investigate Data Fusion ........................................................................................... 79 6.1 Introduction ......................................................................................................... 79 6.2 Past Studies on Data Fusion ................................................................................ 80 6.3 Data Fusion Process and Case Study .................................................................. 85 6.4 Summary ............................................................................................................. 88 7. Summary of Findings and Recommendations ........................................................ 89 7.1 Key Findings ....................................................................................................... 89 7.2 Critical Factors for TXDOT ................................................................................ 91 7.3 Recommendations/Implementation Strategy ...................................................... 96 8. References ..............................................................................................................