1. Meridian / PFS MDSS Capabilities John Mewes & Leon Osborne Meridian Environmental Technology, Inc.

2. Overview  Comprehensive Solution Integrates past & present maintenance actions, weather, and road condition reportsIntegrates past & present maintenance actions, weather, and road condition reports Adheres to resource & practice constraints, and allows for day- to-day adjustments of those constraintsAdheres to resource & practice constraints, and allows for day- to-day adjustments of those constraints Provision for optimal, standard, and ‘what-if?’ virtual maintenance actionsProvision for optimal, standard, and ‘what-if?’ virtual maintenance actions Features geared toward all levels of managementFeatures geared toward all levels of management  One-stop-shop concept  Developed in concert with PFS states

3. Maintenance Actions Modifications to Standard Practices Results Expected from Proposed Treatment Road Condition Observations / Analyses Propose Alternative Treatment ‘Optimal’ Treatment & Expected Results Maintenance Practices and Activities Databases MDSS Processing & Integration System RWIS BLUE: Forecast / TheoreticalRED: Real-Time / ActualBLACK: Applies to Both SOLID: Automatic or Semi-Automatic Process DASHED: User-Driven Process Resources Used / Available Road Condition Analysis & Forecast System (RCAF) High Resolution Gridded Weather Forecast Database High Resolution Gridded Weather Observations Database Observed & Analyzed Roadway State Databases Available Resources Database Roadway & Environment Characterization Database

4. Alert Panel Provides an Overview of the Forecast Conditions for Viewed Area Equivalent Information is Available on a Per-Route Basis within Map View

5. Map View Provides an Integrated Spatial Display of Weather Conditions, Road Conditions, and Maintenance Actions Includes Dynamic Zoom, Loop, and Overlay Controls Features Displayed are Selectable For More Detailed Information (Drill-Down)

6. Map View Time Slider Allows User to Look Backward or Forward in Time Customized Map Views are Stored on a Per-User Basis

7. Route View Displays Information for an MDSS Route in a Time- Series Format Conveys Past, Present, & Future Weather Conditions, Road Conditions, and Maintenance Actions

8. Route View Generates & Displays Maintenance Recomendation Based On Present Road Condition, Forecast Weather Conditions, and Adjustable Resource & Material Constraints Can Identify and Simulate Anticipated Response of the Road to Standard Local Operating Practices

9. Route View A Simple Sub-Interface of the Route View Allows the User to Test Alternative Maintenance Actions

10. One-Stop Shop Concept Put Everything Together in One Place

11. One-Stop Shop Concept Drill-Down Capabilities for More Detailed Information on Most Data Types