Final Report

November 2008

Prepared for the Federal Highway Administration Road Weather Management Program

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Table of Contents

1 Executive Summary

2 Introduction

3 Review of ESS Siting Guide and Metadata Checklists

3.1 Results from Survey of DOT ESS Implementers

3.2 Analysis

4 State DOT Implementation Experience and Evaluation

4.1 Michigan Department of Transportation Implementation and Evaluation

4.2 Idaho Transportation Department (ITD) Evaluation

4.3 New Hampshire Department of Transportation Evaluation

5 Recommendations For Siting Guide Enhancements

6 Recommendations For ESS Metadata

Appendix A – Discussion Guide For ESS Interviews

Appendix B – Acronyms and Abbreviations

Appendix C – References and Related Documents

List of Tables

Table 1 – Guide Siting Criteria and MDOT Implementation

Table 2 – Recommended Changes To Guide

Table 3 – Metadata Recommended In Original Guide And Clarus Equivalents

Table 4 – Supplemental Information Recommended In Guide

Table 5 – Supplemental Sensor Information For Specific Sensor Types And Clarus Equivalents

Table 6 – Clarus Metadata Requirements - Critical Metadata Fields

Table 7 – Clarus Optional And Recommended Owner-Provided Fields

List of Figures

Figure 1 – New Hampshire Ess Sites