2019 Road Weather Management Performance Measures Update

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FHWA-HOP-19-089

September 2019

[ Notice and Quality Assurance Statement ] | [ Technical Report Documentation Page ] | [ List of Acronyms ]

Executive Summary
Chapter 1. Introduction
Chapter 2. Road Weather Management Impacts Assessment
- Overview
- Performance Findings
Chapter 3. Application of Road Weather Management Tools and Technologies
- Overview
- Performance Findings
Chapter 4. Road Weather Management Capacity Building
- Overview
- Performance Findings
Chapter 5. Partnerships and Stakeholder Collaboration
- Overview
- Performance Findings
Chapter 6. Recommendations and Conclusions
Appendix A: State Department of Transportation Survey
Appendix B: Findings by Measure

List of Figures

Figure 1. Map. States that responded to the 2019 Road Weather Management State DOT Survey.
Figure 2. Graph. Percentage of agencies that collect and report road weather performance measures.
Figure 3. Graph. Percentage of agencies surveyed that use a "winter severity index" to compare performance across events or years.
Figure 4. Graph. Percentage of agencies surveyed with a process for evaluation the return on investment or net benefit of their road weather management investments.
Figure 5. Graph. Nationwide salt usage by year (in millions of tons of salt).
Figure 6. Graph. National expenditures for snow and ice removal, 2001-2016 (in thousands of dollars).
Figure 7. Graph. Fatal crash rates per thousand licensed drivers, 2001-2017.
Figure 8. Graph. Fatal crash rates per billion vehicle miles traveled, 2001-2017.
Figure 9. Graph. Percentage of States that subscribe to weather and road weather products and services.
Figure 10. Graph. Percentage of agencies collecting real-time field data from maintenance vehicles.
Figure 11. Graph. Number of agencies answering the question "Which of the following data are collected from the maintenance vehicles, and from what percentage of the applicable fleets?"
Figure 12. Graph. Use of Environmental Sensor Stations (ESS) at State departments of transportation.
Figure 13. Graph. Percentage of State DOTs indicating use and non-use of Maintenance Decision Support Systems (MDSS).
Figure 14. Graph. Percentage of State DOTs using weather-related decision support tools for road weather management.
Figure 15. Graph. Percentage of State DOTs Using weather-responsive traffic analysis and simulation tools for planning and evaluating road weather management.
Figure 16. Chart. Survey responses on the use of vehicle-to-infrastructure or infrastructure-to-vehicle connectivity.
Figure 17. Graph. Percentage of agencies involved in extreme weather or resilience activities.
Figure 18. Graph. States participating in road weather management meetings.
Figure 19. Graph. Number of agencies participating in road weather research and development projects.
Figure 20. Graph. Level of coordination between State DOTs and NWS local forecast offices.
Figure 21. Chart. Responses from State department of transportation survey question 4.
Figure 22. Chart. Responses from State department of transportation survey question 5.
Figure 23. Chart. Responses from State department of transportation survey question 6.
Figure 24. Graph. Responses from State department of transportation survey question 7.
Figure 25. Graph. Responses from State department of transportation survey question 8.
Figure 26. Chart. Responses from State department of transportation survey question 8.
Figure 27. Graph. Responses from State department of transportation survey question 9.1.
Figure 28. Chart. Responses from State department of transportation survey question 10.
Figure 29. Graph. Responses from State department of transportation survey question 11.
Figure 30. Chart. Responses from State department of transportation survey question 11.1.
Figure 31. Chart. Responses from State department of transportation survey question 12.
Figure 32. Graph. Responses from State department of transportation survey question 12.1.
Figure 33. Graph. Responses from State department of transportation survey question 13.
Figure 34. Chart. Responses from State department of transportation survey question 14.
Figure 35. Chart. Responses from State department of transportation survey question 15.
Figure 36. Graph. Responses from State department of transportation survey question 16.
Figure 37. Graph. Responses from State department of transportation survey question 17.
Figure 38. Graph. Responses from State department of transportation survey question 18.

List of Tables

Table 1. Data Sources, Related Activities, and Strengths and Weaknesses of Each Performance Measure.
Table 2. Performance Measure Mapping.
Table 3. Meetings with Road Weather Program Representation, 2017-2019.
Table 4. State DOT Survey Question 4 and Associated Reponses.
Table 5. State DOT Survey Question 5 and Associated Reponses.
Table 6. State DOT Survey Question 6 and Associated Reponses.
Table 7. State DOT Survey Question 7 and Associated Responses.
Table 8. State DOT Survey Question 7.1 and Associated Responses.
Table 9. State DOT Survey Question 8 and Associated Responses.
Table 10. State DOT Survey Question 8.1 and Associated Responses.
Table 11. State DOT Survey Question 9 and Associated Responses.
Table 12. State DOT Survey Question 9.1 and Associated Responses.
Table 13. State DOT Survey Question 5 and Associated Reponses.
Table 14. State DOT Survey Question 10 and Associated Reponses.
Table 15. State DOT Survey Question 11.1 and Associated Responses.
Table 16. State DOT Survey Question 12 and Associated Responses.
Table 17. State DOT Survey Question 12.1 and Associated Responses.
Table 18. State DOT Survey Question 13 and Associated Responses.
Table 19. State DOT Survey Question 14 and Associated Responses.
Table 20. State DOT Survey Question 15 and Associated Responses.
Table 21. State DOT Survey Question 16 and Associated Responses.
Table 22. State DOT Survey Question 17 and Associated Responses.
Table 23. State DOT Survey Question 18 and Associated Responses.
Table 24. State DOT Survey Question 12 and Associated Responses.
Table 25. Summary of Objective #1 Performance Measures.
Table 26. Summary of Objective #2 Performance Measures.
Table 27. Summary of Objective #3 Performance Measures.
Table 28. Summary of Objective #4 Performance Measures.
Table 29. Summary of Objective #5 Performance Measures.
Table 30. Summary of Objective #6 Performance Measures.
Table 31. Summary of Objective #7 Performance Measures.
Table 32. Summary of Objective #8 Performance Measures.

2019 Road Weather Management Performance Measures Update

Table of Contents

List of Figures

List of Tables