APWA Public Works Expo August 29 th, 2016

Transcription

1 Minnesota DOT (MnDOT) Road Weather Severity APWA Public Works Expo August 29 th, 2016 Jakin Koll MnDOT Road Weather Technology 1 Why MnDOT wanted to look at Weather Severity Old Weather Severity Index Why did MnDOT decide to change? New Weather Severity Index Where do we go from here? What does an Agency Need to Get Started? 2 1

2 3 Show how weather varies from year to year Help validate costs of maintenance to upper management, legislature, public, etc. Managing Performance Better Stewards of the Environment Is agency being efficient with material usage? 4 2

3 Used 4 variables Snow events Freezing rain events Snow amount Storm duration Represented our response to the weather not the weather severity Info gathered from maintenance personnel Not consistent from area to area on how it was gathered Mixed acceptance Criticized for not including other weather that we deal with on roads; i.e. wind/blowing snow, etc. 5 Management sought way to compare winters District to District as well as year to year Didn t want it to reflect our response to the weather Wanted consistent way to gather data Needed to consider additional variables Include all weather variables that affect road maintenance 6 3

4 Utilizes data from the Pooled Fund Study Maintenance Decision Support System (PFS-MDSS). Surface weather observations at Airports and RWIS stations, radar, satellite, numerical models, meteorologist inputs, etc. to get the best representation of the weather that occurred in the State. Removes subjectivity and inconsistences in data gathering. It s safe to say that pretty much everything that is important in the weather as it impacts roads is considered in the process. 7 Air temperature Dew point/relative humidity Wind direction/speed/gusts Pavement temperature Sub pavement temperature Blowing snow Frost/Black Ice Surface Pressure Precipitation type/amount (liquid, ice, snow) Cloud cover, and its impacts on solar (shortwave) and infrared (longwave) radiation 8 4

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6 Use MDSS to help calculate road conditions and maintenance actions using the MDSS pavement model. Supplemented with Rd/Weather conditions entered into MDSS by field personnel Accounts for MnDOT s approach to maintenance on each plow route Chemical(s) available, application rates, level of service (LOS) Other maintenance configurations Adjust for varying costs (salt/sand, labor, truck costs, etc.) Surrogate routes spread evenly across state with same LOS and configuration. Keeps MnDOT s specific maintenance variables the same while allowing the weather and pavement conditions drive the index. 11 Road Centric Focuses on the road weather parameters How the weather actually affects the roads Objective Not influenced by agency s response to events Consistent way to gather data Scalable Can produce Statewide results or area to area comparisons 12 6

7 Share with Public Winter at a Glance Keep public engaged in our operations Legislature Help validate costs Comparison of Winter Road Weather Severity Year to Year Month to Month Area to Area

8 15 Winter Maintenance Response Index Features: Uses same weather variables Output is based on Labor, Materials and Equipment Uses individual plow sections Not normalized reflects costs as entered by DOT, can vary area/area and year/year Objective not influenced by agency response to events Flexible can be used for varying time periods, day/day, month/month, year/year, winter to date, region to region Scalable results can be shown as statewide, maintenance area, subarea, truck station or plow route 16 8

9 Uses: Provides costing information to make business decisions Compare against cost data from maintenance management systems and/or data recorded using Automated Vehicle Location systems See difference between actual costs and theoretical costs Efficiency indicator Can run past winters data to show cost of new practices or products What if scenarios Can show cost of increasing or reducing level of service in similar weather conditions Can be used to develop and verify best practices 17 Clearly define what your goals/objectives are. Do you just want to compare weather severity? Relatively easy Do you want to compare costs of maintenance? More difficult as you have to use actual costs, differing level of service across areas, etc. Salt might cost $40/ton in south and $115/ton in the north Might have weaker winter in an area that ends up costing more because of the higher level of service needed. Involve and engage the right people from the beginning Upper Management Maintenance Decision Makers Weather Experts (Meteorologists) MDSS system Way to take subjectivity out of data and data gathering process 18 9

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12 Moveable Anti ice Technology The application of a chemical agent prior to the formation of a bond between the ice and another surface. 12

13 1. Safety: reduce the number of crashes thereby reducing deaths, injuries or damage to vehicles and infrastructure. 2. Protect the environment: traditional salting operations can use products which may harm the environment if overused. 3. $$$: reduce the overall cost of snow and ice operations 1. F.A.S.T (Fixed Asset Spraying Technology) {permanent} 2. CAL-DS (Compact Automated Liquid Dispensing System) {moveable} 13

14 F.A.S.T. sites NB TH pucks spread along the ramps 14

15 F.A.S.T. chemical dispersal F.A.S.T. environmental monitoring sensors 15

16 F.A.S.T. support infrastructure So when you hear the term moveable anti-icing you might think of something like this. 16

17 CAL-DS site Typical CAL-DS installation EB I494 SB TH pucks alongside TH 52 17

18 CAL-DS Chemical dispersal CAL-DS environmental monitoring sensors 18

19 CAL-DS support infrastructure CAL-DS support infrastructure (electrical) 19

20 CAL-DS support infrastructure (chemical) CAL-DS Sprayer installation 20

21 CAL-DS System Data Oversight: Fully automated Communications: Cellular modem to our Intranet Sensors: Non-intrusive (infrared) Power source: Self contained (diesel generator) Electrical storage: 12 volt dry cell batteries Chemical capacity: 250 gallons Spray units: 20 Development Cost: $220,000 Relocation Cost: $ 25,000 Minnesota Department of Transportation Contact information Metro District Maintenance Operations Engineering Services Unit Michael P. Kowski P.E. (651) Michael.p.kowski@state.mn.us 21

22 Sue Lodahl MnDOT Office of Maintenance 8/29/2016 Background MnDOT lacked a department-wide environment and strategy to provide quality data that is complete and accurate (not from system of record but good for budgeting and telling the story) Business Case Accurate, accessible and organized data helps people make better, timely decision and take action 8/29/

23 Data in multiple places RCA MnDOT s Resource Consumption Application SWIFT Statewide Integrated Financial Tools TAMS Transportation Assetment Management System (future) Other data in MnDOT s warehouse Systemic approach to organizing, interpreting and using data Ability to make better, timely decisions and take action 8/29/ Snow and ice control was selected by the Asst. Commissioners because of the importance of this service to the citizens and the maturity of the data. The new reports provided an interactive view of key snow and ice information. 8/29/

24 Old-Crystal Reports Text based Incomplete data due to limited data sources Slow response time due to large amount of data being processed in real time Current-Business Intelligence (BI) Graphical user interface (GUI) Data obtained from multiple sources Data processed and integrated nightly Designed for fast response time 8/29/ Bare Lane Indicator (BLI) Measures Snow and Ice removal performance Event, Bare Lane Lost, and Time to Bare Lane Frequency of meeting target expectations Compare performance Usage and Cost Track Labor, Equipment, and Material (LEM) usage and cost By Fiscal Year, Month, or Day By State, District, Maintenance Area, Sub-area, Truck Station, and Maintenance Route Compare Usage and Cost 8/29/

25 Data is available in BI the day after it is entered into our Resource Consumption Application (RCA). This data includes usage, and bare lane indicator data. RCA is the time sheet application where data on labor hours, equipment usage, and materials used is entered Data is to be entered within 24 hours after the end of a shift Costing information is then calculated from tables that have been created. 8/29/ Measurements Time to Bare Lane - Regain Time Measured by End of Event to Bare Lane regained Expectations based on Service Level Percentage of events where Meets Expectations or Under Expectations is met Frequency Summary Target 70% Minimum Acceptable 55% Dashboards Shows measurements graphically Compare years Compare Districts 8/29/

26 Dashboards Regain Time Summary 8/29/ Dashboards Regain Time Summary 8/29/

27 Dashboards Frequency Summary 8/29/ Dashboards Frequency Summary 8/29/

28 Dashboards Yearly District Comparison 8/29/ Dashboards Statewide & District Overview 8/29/

29 RCA usage data is combined with the most current cost data from SWIFT/Finance in the nightly ETL process Extract the data from RCA/Finance Transform merge the data and calculate costs Load the data into a database structure known as a Star Schema The center table is known as a Fact table Contains data to be measured, in this case, usage and costs The other tables are known as Dimension tables Or how the data in the Fact table is to be measured 8/29/ /29/

30 Interactive View Each dashboard contains a parameter selection area 8/29/ Summary View 8/29/

31 Drill into the data 8/29/ Drill into the data 8/29/

32 Drill into the data 8/29/ Drill into the data To the maintenance route detail 8/29/

33 Aggregation and comparison of yearly costs 8/29/ Includes the LEM detail of a operator RCA entry 8/29/

34 Interactive view Summarized level down to granular details Communication to legislators, media and public Disclaimer 8/29/ Disclaimer All dashboards display a disclaimer 8/29/

35 Not the system of record/disclaimer but provides timely LEM Timeliness was the design priority Costs are estimated Current labor costs are not available due to two week pay cycle Equipment costs are based on an annual recovery rate Material costs are based on State averages Usage amounts were designed <5% difference from actuals. In most instances there is <1% difference. Costs within 10-12% of system of record 8/29/ /29/

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38 Snow and Ice is a subset of the maintenance activity available in BI. 8/29/ /29/

39 For more information contact me at: Thank you and enjoy the rest of the conference. 8/29/