Maintenance Decision Support SystemKevin McLain

SurfaceFriction

ChemicalConcentrationOn Road

Road Surface Temperature

Snow DepthAnd DriftRoad Condition Modules

DICASTWeather &EnvironmentCRRELMODULESCalculate RoadConditionDOTINTERFACECollectMaintenance(actual)GUIDisplayForecastsDECISIONSUPPORTDetermineMaintenance(recommended)Spatial &Temporal

Road Temperature & Precipitation TypeFriction Coefficient & Precipitation Type

Time SeriesFriction Coefficient & Precipitation Type

Two-Day Friction Coefficient PredictionWithout TreatmentPrediction Point #3Friction Coefficient36912151821242730333639424548 Time (hrs)000.10.20.30.40.50.60.70.80.91

What ?

When ?

How ?

RECOMMENDED TREATMENTNo Treatment NeededPlay Movie to look ahead !

mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Monday Current TimeTime WindowMovie3:15 am Road FrictionGoodCurrent Time 10:15 amMonday Water Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesRoads Overlays Treatments TimeLine ResourcesRoad Friction GraphGame PlanPrediction Background 1 2 3 4Crew Trucks Material Stocks

Round RoadRECOMMENDED TREATMENTTreatment will be needed soonPlay Movie to look ahead !

Fairmid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Monday Current TimeTime WindowMovie3:15 am1:00 pmRoad Friction GraphGame PlanPrediction Background 1 2 3 4Crew Trucks Material Stocks Road FrictionCurrent Time 10:15 amMonday Water Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesMile Marker 231Mile Marker 245Mile Marker 255

Bridge 8Mile Marker 38Mile Marker 55

Bridge 1Mile Marker 9Mile Marker 21

Bridge 1Mile Marker 14

Roads Overlays Treatments TimeLine Resources

mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Monday Current TimeRECOMMENDED TREATMENTFirst Warning For Treatment CLICK ON A FLASHING DOTFOR MAINTENANCE DETAILS !

Time WindowMovie3:15 am10:00 pm3:30 am3:30 am3:30 am3:15 amPoor !4:00 amRoads Overlays Treatments TimeLine Resources3:30 am4:00 am3:15 am Road FrictionCurrent Time 10:15 amMonday Water Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesMile Marker 231Mile Marker 245Mile Marker 255

Bridge 8Mile Marker 38Mile Marker 55

Bridge 1Mile Marker 9Mile Marker 21

Bridge 1Mile Marker 14

Road Friction GraphGame PlanPrediction Background 1 2 3 4Crew Trucks Material Stocks

mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Monday Current Time10:00 pmTime WindowRECOMMENDED TREATMENT InitialTreatment Time: 3:15 am Tuesday Material: AbrasiveApplication (per two-lane mile): 1200 lbsPre-wet: PREDICTIONIce Forming at 3:30 am TuesdayMovie3:30 am3:15 amPoor !3:30 am3:30 am3:30 am3:15 am4:00 am3:30 am4:00 amMM 2453:15 am Road FrictionCurrent Time 10:15 amMondayRoads Overlays Treatments TimeLine ResourcesMile Marker 231Mile Marker 245Mile Marker 255

Bridge 8Mile Marker 38Mile Marker 55

Bridge 1Mile Marker 9Mile Marker 21

Bridge 1Mile Marker 14

Water Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesRoad Friction GraphGame PlanPrediction Background 1 2 3 4Crew Trucks Material Stocks

RECOMMENDED TREATMENT InitialTreatment Time: 3:15 am Tuesday Material: AbrasivesApplication (per two-lane mile): 1200 lbsPre-wet: GoodFairPoorLOS 1mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Ice Forming Snow 1 accum.Mile Marker 231Mile Marker 245Mile Marker 255

Bridge 8Mile Marker 38Mile Marker 55

Bridge 1Mile Marker 9Mile Marker 21

Bridge 1Mile Marker 14

10:00 pmTime WindowMovie3:30 am1:30 pmCurrent TimePREDICTIONIce Forming at 3:30 am Tuesday3:15 amNo TreatmentWith TreatmentWater Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesRoad Friction GraphCurrent Time 10:15 amMondayRoads Overlays Treatments TimeLine Resources

RECOMMENDED TREATMENT SubsequentTreatment Time: 1:15 pm Tuesday Material: Sodium ChlorideApplication (per two-lane mile): 400 lbsPre-wet: Calcium Chloride, 8 gals./tonGoodFairPoorLOS 1mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Ice Forming Snow 1 accum.9:45 amTime WindowMovie3:30 am1:30 pmCurrent TimePREDICTION1 Snow accum. by 1:30 pm Tuesday1:15 pmMile Marker 231Mile Marker 245Mile Marker 255

Bridge 8Mile Marker 38Mile Marker 55

Bridge 1Mile Marker 9Mile Marker 21

Bridge 1Mile Marker 14

No TreatmentWith TreatmentWater Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesRoad Friction GraphRoads Overlays Treatments TimeLine ResourcesCurrent Time 10:15 amMonday

GoodFairPoorLOS 1mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Ice Forming Snow 1 accum.9:45 amTime WindowMovie3:30 am1:30 pmCurrent TimePREDICTION1 Snow accum. by 1:30 pm TuesdayMile Marker 231Mile Marker 245Mile Marker 255

Bridge 8Mile Marker 38Mile Marker 55

Bridge 1Mile Marker 9Mile Marker 21

Bridge 1Mile Marker 14

DELAYED TREATMENT !2:30 pmNo TreatmentDelayed TreatmentCurrent Time 10:15 amMondayDELAYED TREATMENT BY 1.25 HRS ! SubsequentDelayed Treatment Time: 2:30 pm Tuesday Material: Sodium ChlorideApplication (per two-lane mile): 800 lbsPre-wet: Calcium Chloride, 8 gals./ton1.25 hr delay causes higher treatment rate. You may run out of sodium chloride check Material Stocks.Water Ice Snow Map OverlaysCurrent Depth, in.New Depth, in.Rate, in./hrWater Equivalent, in.Drift Depth, in.Road Temperature, F Salt Conc., %FogCloud CoverHigh Wind, mphTruck RoutesRoad Friction GraphMile Marker 245Roads Overlays Treatments TimeLine ResourcesCurrent Time 10:15 amMonday

3:30 am3:30 am3:30 am3:30 am3:15 am3:15 amBCA4:00 am4:00 amRCrewTrucksMaterial StocksTruck Routes Standard CustomRoad StatusLogistics MatrixRRRoads Overlays Treatments TimeLine ResourcesGame Plan

RECOMMENDED TREATMENT Treat. Start Time Call @ Route Segment Driver Truck ID Dress & Load Treat. Rate/TLM9:00 pm Monday midnight Mon/Tue 3 :15 am Tuesday A 2,3,4 Sam Salter Mack X NaCl, pw-8g. CaCl 400 lbs

Notes: Drive reverse route9:00 pm Monday 1:00 am Tuesday 3:15 am Tuesday C 8,9,10 Polly Plowgirl Mack Z Sand (ballast) Plow only9:00 pm Monday 1:30 am Tuesday 3:30 am Tuesday B 6,7 Gary Grippy Mack Y Sand; Seg. 7 1200 lbsNotes: Ford NaCl; Seg. 6 400 lbsBASED ON RECOMMENDED TREATMENTS Material StocksType On-Hand11 tons to be usedinitial treatment5 tons to be usedinitial treatment30 gallons to be usedinitial treatment10 tons40 tons250 gallons120 tons Engine blown NaCl CaClCaCl liquid Abrasives Roads Overlays Treatments TimeLine ResourcesGame Plan Initial RCrew -AutoCallTrucksMaterial StocksTruck Routes Standard CustomRoad StatusLogistics Matrix Initial Subsequent

RRRRRR

mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Monday Current TimeFog 70%Fog 30%10:00 pm None Freezing Rain Rain Sleet Snow None 0 0.10 0.25 0.25 4.0 0 0 0.10 0.25 0.06 1.0 0Time WindowMovieTypePrecipitation Probability (%) New Depth (in.)snow/sleet/rainliquid equiv.

snowdriftsLOS 13:30 am1:30 pmSalt Brine Concentration (% by weight)50403020100GoodFairPoorRoadFrictionNo TreatmentWith TreatmentPrediction Background 1TaTrTdTemperature (F)Roads Overlays Treatments TimeLine Resources 0 100 90 75 50 50 40383634323028262422201816

TaTrTdTemperature (F)403836343230282624222018162055101051010155153020100WindDirection and Speed (mph) snowdriftssnowdriftsCloudCover(%)1005002.2521.751.501.251.75.50.250Depth On Road (in.)ofSnow, Ice, Water Prediction Background 2Roads Overlays Treatments TimeLine Resourcesmid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2 4 6 8 10 noon 2 4 6 8 10 mid 2Monday Tuesday Wednesday Thu 10:15 am Monday Current Time10:00 pmTime WindowMovie

Conditions at Interstate 15, Mile Marker 245

CurrentTime 11:53 PM Feb 07, 2001Temperature 35.1 F (1.7 C) Dew Point 28.0 F (-2.2 C) Relative Humidity 75% Pressure (altimeter) 29.72 in. Hg (1006 hPa) Pressure tendency 0.02 inches (0.6 hPa) higher than three hours ago Maximum and Minimum Temperatures F (C)28.0 (-2.2) / 21.0 (-6.1) In the 6 hours preceding Feb 06, 2001 - 12:53 PM 28.0 (-2.2) / 21.0 (-6.1) In the 24 hours preceding Feb 05, 2001 - 11:53 PMAccumulation A trace Precipitation History A trace Last hourA trace In the 6 hours preceding Feb 06, 2001 - 12:53 PM0.01 inches In the 24 hours preceding Feb 05, 2001 - 06:53 AMWind from the NW (310 degrees) at 5 MPH (5 KT) Visibility 10 mile(s) Sky conditions partly cloudy

24 Hour Summary 1PM (18) Feb0635.1 (1.7)28.0 (-2.2)29.72 (1006)NW 5Noon (17) Feb0634.0 (1.1)30.0 (-1.1)29.72 (1006)W 9light snow; mist11 AM (16) Feb0634.0 (1.1)28.0 (-2.2)29.72 (1006)WSW 810 AM (15) Feb0633.1 (0.6)28.0 (-2.2)29.71 (1006)WSW 69 AM (14) Feb0630 (-1)28 (-2)29.7 (1005)Calm8 AM (13) Feb0630 (-1)26 (-3)29.7 (1005)Calm7 AM (12) No Data6 AM (11) Feb0628.9 (-1.7)24.1 (-4.4)29.63 (1003)Variable 45 AM (10) Feb0630 (-1)24 (-4)29.6 (1002)N 6light snow; mist4 AM (9) Feb0630 (-1)26 (-3)29.59 (1002)NNW 5light snow; mist3 AM (8) Feb0630 (-1)26 (-3)29.55 (1000)NW 9light snow; mist2 AM (7) Feb0630 (-1)28 (-2)29.53 (1000)NNW 10light snow; mist1 AM (6) Feb0628 (-2)28 (-2)29.51 (999)Variable 5snow; freezing fog Midnight (5) Feb0627.0 (-2.8)27.0 (-2.8)29.53 (1000)NNW 6snow; freezing fog11 PM (4) Feb0527.0 (-2.8)27.0 (-2.8)29.57 (1001)NNW 6snow; freezing

Conditions Summary and Forecast - Text

Forecast Time 12:53 PM Feb 05, 2001 Temperature 34.7 F (1.5 C) Dew Point 28.0 F (-2.2 C) Relative Humidity 75% Roads Overlays Treatments TimeLine Resources