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4/28/09
2009 NASC 1
Maintenance Decision Maintenance Decision
Support System (MDSS): Support System (MDSS):
A Practical Tool for All A Practical Tool for All
Maintenance ManagersMaintenance Managers
Ben Hershey & Bob Hart
Meridian Environmental Technology, Inc.
APWA Snow and Ice Conference
April 28th, 2009
Phillip Anderle
Colorado Department of Transportation
What is MDSS?What is MDSS?
• A decision support system that integrates pastpast and and
current current weather, maintenance weather, maintenance and road conditionsroad conditions
with forecastedforecasted weatherweather and roadroad conditionsconditions to
evaluate and recommend treatment optionsrecommend 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
4/28/09
2009 NASC 2
PFS MDSS PFS MDSS
Development GuidelinesDevelopment Guidelines•• Integrate:Integrate:
�� Maintenance practices & policiesMaintenance practices & policies
�� Available maintenance resourcesAvailable maintenance resources
�� Previously reported maintenance treatmentsPreviously reported maintenance treatments
�� Road conditions and predictionsRoad conditions and predictions
�� Weather conditions and forecastsWeather conditions and forecasts
•• To Yield:To Yield:�� Recommended maintenance actions that are continually updatedRecommended maintenance actions that are continually updated
�� Provide mechanisms to enable Provide mechanisms to enable ‘‘What IfWhat If’’ decisiondecision--making supportmaking support
•• Major Design Requirements:Major Design Requirements:�� Develop a MDSS that is independent of weather service providerDevelop a MDSS that is independent of weather service provider
�� Develop a MDSS that is modular with published interface Develop a MDSS that is modular with published interface specificationsspecifications
Concept of OperationsConcept 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
DynamicDynamic
SituationSituation
RoadRoad
ConditionCondition
MaterialMaterial
ApplicationsApplications
PlowingPlowing
OperationsOperations
Current StatusCurrent Status
Materials
Inventory
MaterialsMaterials
InventoryInventoryCrew
Schedules
CrewCrew
SchedulesSchedulesEquipment
Availability
EquipmentEquipment
AvailabilityAvailability
Static ResourcesStatic Resources
FacilitiesFacilitiesFacilities
PoliciesPoliciesPolicies
PracticesPracticesPractices
DOTDOT
Maintenance InformationMaintenance Information
•• RWISRWIS
•• Road ReportingRoad Reporting
•• Maintenance ActivityMaintenance Activity
TrackingTracking
Meridian MDSS is designed to specifically focus on MAINTENANCE
Meridian MDSS is designed to specifically Meridian MDSS is designed to specifically
focus on MAINTENANCEfocus on MAINTENANCE
4/28/09
2009 NASC 3
MDSS Mass & Energy ModelMDSS Mass & Energy Model
MDSS modeling requires knowledge MDSS modeling requires knowledge
of plowing and chemical applicationsof plowing and chemical applications
Maintenance ActionsModifications to
Standard Practices
Results Expected from Proposed
Treatment
Road Condition Observations /
Analyses
Propose Alternative Treatment
‘Optimal’ Treatment & Expected Results
Maintenance Practices and
Activities Databases
MDSSProcessing& IntegrationSystem
RWIS
BLUE: Forecast / Theoretical RED: Real-Time / Actual BLACK: Applies to Both
SOLID: Automatic or Semi-Automatic Process DASHED: User-Driven Process
ResourcesUsed / Available
Road ConditionAnalysis &
Forecast System(RCAF)
High ResolutionGridded Weather
Forecast Database
High ResolutionGridded Weather
Observations Database
Observed & Analyzed Roadway
State Databases
Available ResourcesDatabase
Roadway & Environment
Characterization Database
PFS MDSS PFS MDSS
Participation GrowthParticipation GrowthPresent Members: 14 State DOTs
• 2002
� IN, MN, ND, SD, IA
• 2004
�CO
• 2005
�KS, WY
• 2006
�CA, NH
• 2007
�NY, VA, NE
• 2008
�KY
4/28/09
2009 NASC 4
-1950
-1960
-1970
-1980
-1990
-2000
- Clarus- NAS Report- AMS Policy Forum
- PFS MDSS- MDSS Prototype- 511
- COMET FHWA/NWS- OFCM WIST II- NITSA Version 4.0
- rWeather- STWDSR- OFCM WIST I
- FORETELL
- #SAFE Deployment- ATWIS En-Route Wx
- ITSA WIATF- RWIS Wx Forecasting
- SHRP - RWIS
Completion of the NationalInterstate Highway System
- WIST Report
-2010
TE- 28
Welcome to the MDSS Main Screen Display. It is composed of 4 main parts:
Road & Weather Alerts
Weather & RoadParameters
TimeSelection
andAnimation
State Alerts
and LocalRoutes
Click forNext Slide
4/28/09
2009 NASC 5
Required initial information Required initial information
from CDOTfrom CDOT•• Route Route –– highway, mileposthighway, milepost
•• Route segmentationRoute segmentation
•• Construction Construction –– surfacing, subsurfacing, sub--grade materialsgrade materials
•• Traffic Traffic –– annual traffic counts (auto/truck)annual traffic counts (auto/truck)
•• Timing Timing –– route traversal, cycle timesroute traversal, cycle times
•• Material Material –– types, units, application rates, coststypes, units, application rates, costs
•• Hours of operationHours of operation
•• Forced downtime (eg. excessive traffic)Forced downtime (eg. excessive traffic)
•• Practices (SOG)Practices (SOG)
•• Levels of serviceLevels of service
•• Equipment specifications Equipment specifications –– plow, spreaderplow, spreader
•• Operator/Route/Equipment AssociationsOperator/Route/Equipment Associations
•• Other unique information about the routeOther unique information about the route
MDSS PFS MDSS PFS –– EIGHT STATESEIGHT STATES
After the 2004/05 SeasonAfter 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
4/28/09
2009 NASC 6
2006/07 CDOT added more routes
Today, CDOT has routes in every region
Contact InformationContact Information
• Phillip Anderle -- Deputy Transportation Maint. Superintendent
– Region 4, Maintenance Section 1, Greeley, CO
– Email: [email protected]
– Phone: 970-350-2119
• Ben Hershey – Director of Road Weather Services
– Grand Forks, ND
– Email: [email protected]
– Phone: 701-792-1800
• Bob Hart – Surface Transportation Weather Manager
– Prior Lake, MN
– Email: [email protected]
– Phone: 952-233-1939
