What is 511? Need for 511 Services. Development & Deployment of Regional Road and Weather Information Supporting 511 Traveler Services

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1 Development & Deployment of Regional Road and Weather Information Supporting 511 Traveler Services Leon F. Osborne University of North Dakota Regional Weather Information Center Grand Forks, ND David L. Huft SD Department of Transportation Office of Research Pierre, SD Federal Communications Commission (FCC) designated number for travel information FCC designation 2000 First 511 launched 2001 Northern Kentucky Nebraska (statewide) 12 systems by 2003 Presently over 20 deployed systems What is 511? Source: Need for 511 Services 2001 Gallup Organization survey on behalf of the Intelligent Transportation Society of America Market Research Identified nationwide support for improved travel information Most Desired Feature Weather and Road Condition Information Requested predominantly by users making long distance trips Other Desired Features (in order of desire expressed) Accidents/Road Incident Reports Construction Updates Traffic Congestion Levels Advanced Travel Weather Information System (ATWIS) Demonstrated effectiveness of mesoscale analysis & forecasting for travel Established common cellular access number #SAFE Pre-trip or in-vehicle information delivery Site-specific, route-specific Weather forecasts Road conditions Transferred technology from public to private GIS-T 2004 Rapid City, SD March 29,

2 ATWIS Program History 511 Operational Framework July 95 Begin Nov miles Nov miles Nov miles Nov miles Aug 00 Statewide 27,000 miles Nov 01 Nebraska 511 Nov 02 South Dakota ,000 25,000 20,000 15,000 10,000 5,000 0 Centerline Miles High-Performance Computing for Weather Modeling Advanced Operations Forecasting Center Facility Maintenance Forces Central Servers Unit & Shop Supervisors Data Acquisition & Assimilation Internet Network R/WIS State DOT Web Server Interactive Voice Response Server Rural Traveler Life Cycle of a 511 Call (Weather / Road Condition Content) Multi-State 511 Support System Caller dials 511 Carrier s switching office translates 511 digits to: A local toll number *OR* A toll-free number 511 provider answers call via automated system. Weather and road condition information is continually prepared and stored on 511 database Weather Forecast Road Condition & Construction Reports STATE GIS DATA RWIS/TOWNS/MRM MT Telephony ND Telephony MN Telephony Caller requests information using DTMF (tones) or ASR (automatic voice response) Caller receives route- & timespecific concatenated voice message containing weather and road condition information User s location and request is resolved against the geospatial database and converted to speech phrase corresponding to TMDD and/or ATIS standards messages All Input Data Is Geospatial in Nature Static Data Dynamic Data Operational Database Hotels/Motels Services Hospitals Restaurants Rest Stops SD Telephony KS Telephony NE Telephony GIS-T 2004 Rapid City, SD March 29,

3 Development & Deployment of Regional Road & Weather Geospatial Design Challenges Road Network Feature Mapping Road network in each State is divided into discrete segments that: Real-Time Weather Analysis and Forecasting Coincide with interchanges that permit convenient exit for Near-Real-Time Road Condition Data Represent a weather forecast sub-domain, or a road condition reporting segment Road Network Feature Mapping Services Safety during inclement weather Base unit of reference is latitude and longitude of each mile reference marker (MRM) along a road segment Attributes of resulting polylines serve as the basis for all 511 services MRM Points for SD & ND Highways (1996) Minto exit Splits in point shapefiles isolate nodes for desired segment extents An individual polyline for each discrete segment is formed by joining the points Buxton exit Grand Forks segment Segment ID GIS-T 2004 Rapid City, SD March 29, 2004 Defined Attributes Route Mapping Features 3

4 5 states 400 road segments 511 System: 2004 Real Time Weather Analysis and Forecasting Incorporates data from static road network shapefiles Latitude and Longitude of MRMs Attributes of Segment length Forecast Grid ID County FIPS code Mapping model ensures correspondence of weather data to appropriate road segment Model is written in a mixture of C and Tcl/TK Incorporates standard open source shapefile and projection libraries Utilizes contents from both the.dbf and.shp files Combination of Heterogeneous Data Fields Satellite Data Mapping of Solution onto Geographic Network Weather Information Generated As Gridded Fields Weather Radar Data Atmospheric Winds Atmospheric Thermal Structure The Meridian Weather Grid Editor Roadway Environment Conditions = Three-Dimensional Data Assimilation Data points every 6 miles Result of Parameter Integration is Joined with a Geospatial Domain to Produce Information for Distribution GIS-T 2004 Rapid City, SD March 29,

5 511 Weather Message Content Output Keyed to Geographical Locations The Meridian Weather Grid Editor Precipitation Wind Speed & Direction Temperature Visibility Cloud Cover Road Condition Near-Real-Time Road Condition Data Predominantly visual observation Low-volume data assigned to specific routes Typically received at preset intervals as text messages from State DOT or State Patrol Geocoding follows similar rules to weather data for provision via 511 Provides detailed segmentation of the South Dakota state road network Selectable regions: Individual segment Individual route Maintenance shop Maintenance unit Maintenance area Pull-down menus permit quick geocoding of road condition information Surface conditions Construction & maintenance Traffic and incidents Based on Traffic Management Data Dictionary (TMDD) Integrated Road Information System (IRIS) Integrated Road Information System Construction & Maintenance Road Conditions Incidents Executives I-90 CLOSED WEST OF CHAMBERLAIN USE OTHER ROUTES Road Condition Reporting System Message Signs Commercial Vehicle Permitting System Traveler Information Web Pages & Kiosks Maintenance Decision Support Law Enforcement GIS-T 2004 Rapid City, SD March 29,

6 Contact Leon F. Osborne, Jr. Professor, Atmospheric Sciences University of North Dakota Grand Forks, ND David L. Huft Research Program Manager SD Dept. of Transportation Pierre, SD (go to Divisions and Research ) GIS-T 2004 Rapid City, SD March 29,