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THE FHWA PROGRAM FOR PROTOTYPING ADVANCED DECISION SUPPORT FOR
WINTER ROAD MAINTENANCE
PAUL PISANO
ROAD WEATHER MANAGEMENT COORDINATOR
FEDERAL HIGHWAY ADMINISTRATION
Presentation Overview
• Summarize Surface Transportation Weather Decision Support Requirements (STWDSR) effort
• Highlight STWDSR findings
• Review Maintenance Decision Support System (MDSS) project
Goals
STWDSRNeeds, Requirements, Outcomes
DecisionDecisionSupportSupportSystem System
SystemResources
(Information)
PerformanceRequirements
on DSS
User Needs forInformation
The Highway SystemThe Highway System
Safety
Mobility
Productivity
Environment
National Security
(Outcomes)
OperationalTechniques
(Output)
Progress to Date
STWDSRProject
(Mitretek)
OperationalConcept
Description
Stakeholders: State DOTs, National Labs (6),Value Added Meteorological Services (VAMS)
MDSSPrototype
& Ops.Test
00-03
STWDSR V2.0
PreliminaryInterface
Reqs.
STWDSRNeeds(V1.0)
RoadWeather
Mgmt. Prog.
FHWAWeather
Team
WhitePaper
1997 2000
Met. Comm.
Decision Support Needs (V1.0)
• Defined “needs” as “decisions”• Covered all surface transportation
decision makers• Defined 426 needs
– Across 44 decision maker categories– Across 3 scales: planning,
operational, and warning
Micro-Scale Meso/Synoptic Synoptic/ClimaticD M#
Need# Warning Operational Planning
1.0 Infrastructure Operators
1.1 Highway maintainer (winter)1.1 control spreader application1.2 control plow1.3 control static (bridge) deicer1.4 observe/report1.5 navigate spreader/plow truck2.1 monitor conditions2.2 prepare2.3 select strategy2.4 assign crews2.5 prepare equipment2.6 activate staff2.7 initial dispatching2.8 contracting2.9 mid-storm management
2.10 cleanup3.1 devise response plan3.2 hire staff3.3 train staff3.4 buy equipment/services3.5 stock stores3.6 budget3.7 schedule seasonal tasks3.8 calibrate treatment controls
Examples of Needs
Operational Concept Description (V2.0)
• Analyzed winter road maintenance decisions– Originally 10 operational scale decisions– Expanded to 53– Organized into 16 clusters
• Defined essential functions (i.e., system requirements) for the Weather Information for Surface Transportation – Decision Support System (WIST-DSS)
9, 77%
2.I Init. Dispatch
33, 60%
2.F Asgn. Crews
14, 56%
2.D Prep. Exp.
Time Before Event (Hrs., pseudo logarithmic)
100 030 10 3 -3
41, 40%
2.B Prepare
16, 72%2.C Get Ready
2.E Select Strat.
14, 75%
2.G Prep Equip.2.H Act. Staff
0, 96%
2.K Prime Disp.
3.8, 95%49, 46%
2.A Aware
29
Monitor Detect
Needs: Timing and Confidence
Preliminary Interface Requirements (V2.0)
• Defines the information resources needed from external sources for decision support.
• Synthesizes the Information Taxonomy– 212 items necessary to support winter road
maintenance decisions– Three categories: environmental information,
transportation state information, and the treatment asset information.
Prototype DevelopmentThe MDSS Project
• Puts STWDSR effort into practice for one user group (winter maintenance managers)
• Based on design elements captured in the OCD and information interfaces in the PIR
Logical Functions Defined by OCD for MDSS
Update Clock
Select Context
GenerateScenario
UpdateContext
MonitorConditions
PresentDecision
MakeDecision
conditions_scenario
decision_situation
context_planning
context_parameters
time_local
time_universaldecision_operational
presentation_user
input_user
decision_selector
decision_criteria
scenario_selector
situation_selector
context_operational
decision_file
(to all processes)
context_update
context_selector
query_scenarioresponse_scenario
response_decision
query_decision
Primary InformationInterfaces Computer-Human
Interface
MDSS Approach
• Employ National Labs to develop prototype modules– Iterative development with users and
system deployers– Based on open systems principles
• Field test
MDSS Prototype Developers
National Oceanic and Atmospheric Administration (NOAA):
Environmental Technology Lab (ETL)Forecast System Lab (FSL)National Severe Storm Lab (NSSL)
Department of Defense (DOD):
The Army Cold Regions Research and Engineering Lab (CRREL)The Air Force MIT/Lincoln Lab (MIT/LL)
University consortium:
The National Center for Atmospheric Research (NCAR)
Development Schedule
PrototypeDevelopment
OCD&
PIR
9/00 9/01
Field Test& Evaluation
7/03
Deployment
Labs, DOTs,VAMS
References & Contacts
• All documents are posted on the Electronic Document Library
www.its.dot.gov/welcome.htm
• To participate in MDSS contact– Rudy Persaud – 202-493-3391
[email protected]– Gary Nelson – 202-488-5718