NCHRP Synthesis 399: Real-Time Traveler Information Systems

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Contents 1 SUMMARY 4 CHAPTER ONE INTRODUCTION Project Background and Objectives, 4 Study Methodology, 4 Organization of Synthesis, 5 6 CHAPTER TWO THE HISTORY OF TRAVELER INFORMATION Early Real-Time Traveler Information Approaches, 6 The Internet's Impact on Traveler Information, 6 The Impact of 511 on Traveler Information, 7 8 CHAPTER THREE TRAVELER INFORMATION--NEEDS AND EXPECTATIONS OF TRAVELERS Traveler Information Needs, 8 Expectations of Travelers, 10 Special Considerations for Travelers, 12 Summary of Challenges Facing Accessibility to Traveler Information, 13 17 CHAPTER FOUR CURRENT STATUS OF TRAVELER INFORMATION Summary of the Current Status of Traveler Information, 17 Summary of Traveler Information Use, 18 511 Telephone Traveler Information Systems, 18 Public-Operated Traveler Information Websites, 24 Emerging Technologies and Devices, 32 34 CHAPTER FIVE AVAILABLE AND EMERGING DATA SOURCES Current Use of Data Sources and Additional Data Needs, 34 Summary of Current and Future Weather Data Sources, 35 Traffic Data Availability, 36 Event and Incident Data Availability, 37 40 CHAPTER SIX STRATEGIES AND BUSINESS MODELS FOR INFORMATION DELIVERY Challenges Facing Public-Operated Traveler Information Systems, 40 Examples of Cost-Sharing Business Models, 43 Synthesis of Real-Time Traveler Information Delivery Business Model Best Practices, 45 46 CHAPTER SEVEN CONCLUSIONS Summary of Challenges, 46 Suggestions for Future Research, 46 49 REFERENCES 50 APPENDIX A SURVEY FORM 62 APPENDIX Bagencies responding to survey

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Table of Contents

NCHRP - Synthesis 399 Real-Time Traveler Information Systems 1-1

Transportation Research Board 2009 Executive Committee 2-2

NCHRP Synthesis 399 - Real-Time Traveler Information Systems 3-3

National Cooperative Highway Research Program 4-4

About the National Academies 5-5

NCHRP Committee for Project 20-5 6-8

Contents 9-10

Summary 11-13

Study Methodology 14-14

Organization of Synthesis 15-15

The Internet's Impact on Traveler Information 16-16

The Impact of 511 on Traveler Information 17-17

Traveler Information Needs 18-19

Expectations of Travelers 20-21

Special Considerations for Travelers 22-22

Summary of Challenges Facing Accessibility to Traveler Information 23-26

Summary of the Current Status of Traveler Information 27-27

511 Telephone Traveler Information Systems 28-33

Public-Operated Traveler Information Websites 34-41

Emerging Technologies and Devices 42-43

Current Use Of Data Sources and Additional Data Needs 44-44

Summary of Current and Future Weather Data Sources 45-45

Traffic Data Availability 46-46

Event and Incident Data Availability 47-49

Challenges Facing Public-Operated Traveler Information Systems 50-52

Examples of Cost-Sharing Business Models 53-54

Synthesis of Real-Time Traveler Information Delivery Business Model Best Practices 55-55

Suggestions for Future Research 56-58

References 59-59

Appendix A - Survey Form 60-71

Appendix B - Agency Responding to Survey 72-74

Standard Abbreviations 75-76