Table of Contents

• List of Acronyms
• Executive Summary
• 1  Introduction
  • 1.1 Background
  • 1.2 Pathways to Benefits
• 2  Evaluation Scope and Objectives
  • 2.1 Problem Statement
  • 2.2 Scope of Evaluation
• 3  MaineDOT MDSS Deployment
  • 3.1 Introduction
  • 3.2 Study Route and Forecast Points
  • 3.3 Forecast Information Provided by the MDSS
  • 3.4 MDSS Alerts
  • 3.5 MDSS Treatment Recommendations
• 4  MaineDOT Maintenance Operations
• 5  Evaluation Approach and Methods
  • 5.1 Introduction
  • 5.2 Storm Event Reconstruction
  • 5.3 Event Debriefing Interviews
• 6  Findings and Lessons Learned
  • 6.1 Introduction
  • 6.2 The MDSS Role in Road Maintenance
    • 6.2.1  Background
    • 6.2.2  Summary of Findings
  • 6.3 Summary of MDSS Benefits
  • 6.4 Lessons Learned for State DOTs
• 7  Conclusions and Recommendations
• Appendix A: MaineDOT Treatment Recommendations

List of Tables

• Table 1. MDSS Pathways to Benefits
• Table 2. MATS Statistics for Example Storm Event.
• Table 3. Observed Weather Conditions, Portland Jetport ASOS, for Example Storm Event
• Table 4. MDSS Hourly Forecast at 20:00 EST February 13, 2007, 5.5 Hours before Example Event, at Portland
• Table 5. MDSS Hourly Forecast at 01:00 EST February 14, 2007, 1.5 Hours before Example Event, at Portland
• Table 6. Alerts from MDSS to MaineDOT for Example Event
• Table 7. MaineDOT Winter Storm Event Record
• Table A. MaineDOT Treatment Recommendations

List of Figures

• Figure 1. Forecast Points along I-295 Study Route, Maine
• Figure 2. MaineDOT Maintenance Regions
• Figure 3. Pavement Temperature Sensor
• Figure 4. Start Dates for 2006-2007 Winter Storms in Scarborough Area, Maine
• Figure 5. Radar Image of Example Storm Event on 2/14/07 at 4:00 PM
• Figure 6. Event Reconstruction Diagram for Example Event

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