Maintenance Decision Support System (MDSS): A Practical Tool for All Maintenance Managers. What is MDSS? Route Specific Information 4/28/ NASC

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1 Maintenance Decision Support System (MDSS): A Practical Tool for All Maintenance Managers Phillip Anderle Colorado Department of Transportation Ben Hershey & Bob Hart Meridian Environmental Technology, Inc. APWA Snow and Ice Conference April 28th, 2009 What is MDSS? A decision support system that integrates past and current weather, maintenance and road conditions with forecasted weather and road conditions to evaluate and recommend treatment options Transforms huge volumes of weather and maintenance information into direct response recommendations Provides more effective and efficient use of maintenance resources on actual patrol routes Promotes increased safety, reliability and mobility for the traveling public Route Specific Information CDOT Patrol 4152 I-76 from MRM 108 to MRM 145 1

2 PFS MDSS Development Guidelines Integrate: Maintenance practices & policies Available maintenance resources Previously reported maintenance treatments Road conditions and predictions Weather conditions and forecasts To Yield: Recommended maintenance actions that are continually updated Provide mechanisms to enable What If If decisiondecision-making support Major Design Requirements: Develop a MDSS that is independent of weather service provider Develop a MDSS that is modular with published interface specifications Concept of Operations Weather creates a dynamic layer on the road surface The intent of maintenance is to modify and/or remove this layer in the most effective and efficient manner. Road weather, desired level of service, and chemical/resources available are combined to recommend the most appropriate treatment recommendation Meridian Meridian MDSS MDSS is is designed designed to to specifically specifically focus focus on on MAINTENANCE MAINTENANCE Current Status Materials Materials Inventory Inventory Crew Crew Schedules Schedules Equipment Equipment Availability Availability Static Resources Facilities Facilities Policies Policies Practices Practices Dynamic Situation Road Condition DOT Maintenance Information RWIS Road Reporting Maintenance Activity Tracking Material Applications Plowing Operations 2

3 MDSS Mass & Energy Model MDSS modeling requires knowledge of plowing and chemical applications High Resolution Gridded Weather Observations Database High Resolution Gridded Weather Forecast Database Maintenance Practices and Activities Databases Modifications to Standard Practices Maintenance Actions Propose Alternative Treatment Roadway & Environment Characterization Database MDSS Processing & Integration System Optimal Treatment & Expected Results Results Expected from Proposed Treatment Road Condition Observations / Analyses Road Condition Analysis & Forecast System (RCAF) Resources Used / Available RWIS BLUE: Forecast / Theoretical Observed & Analyzed Roadway State Databases Available Resources Database RED: Real-Time / Actual SOLID: Automatic or Semi-Automatic Process BLACK: Applies to Both DASHED: User-Driven Process PFS MDSS Participation Growth Present Members: 14 State DOTs 2002 IN, MN, ND, SD, IA 2004 CO 2005 KS, WY 2006 CA, NH 2007 NY, VA, NE 2008 KY 3

4 - SHRP - RWIS - RWIS Wx Forecasting - ITSA WIATF - ATWIS En-Route Wx - #SAFE Deployment TE- 28 Completion of the National Interstate Highway System - FORETELL - OFCM WIST I - STWDSR - rweather - NITSA Version OFCM WIST II - COMET FHWA/NWS MDSS Prototype - PFS MDSS - WIST Report - AMS Policy Forum - NAS Report - Clarus Welcome to the MDSS Main Screen Display. It is composed of 4 main parts: Road & Weather Alerts State Alerts and Local Routes Weather & Road Parameters Time Selection and Animation Click for Next Slide 4

5 Required initial information from CDOT Route highway, milepost Route segmentation Construction surfacing, subsub-grade materials Traffic annual traffic counts (auto/truck) Timing route traversal, cycle times Material types, units, application rates, costs Hours of operation Forced downtime (eg. excessive traffic) Practices (SOG) Levels of service Equipment specifications plow, spreader Operator/Route/Equipment Associations Other unique information about the route MDSS PFS EIGHT STATES After the 2004/05 Season I-70 Rifle to Glenwood Springs and Highway 82 from Glenwood Spring to Aspen I-25 South of Denver on Monument Hill For 2005/06 CDOT added one route on I-25 N. of Denver 5

6 2006/07 CDOT added more routes Today, CDOT has routes in every region Contact Information Phillip Anderle -- Deputy Transportation Maint. Superintendent Region 4, Maintenance Section 1, Greeley, CO Phone: Ben Hershey Director of Road Weather Services Grand Forks, ND Phone: Bob Hart Surface Transportation Weather Manager Prior Lake, MN Phone: