City of Yakima, Washington 911 CAD/AVL/GPS Applications Tom Sellsted – Supervising Senior Analyst
Information About Yakima, WA Located in Central Washington Agriculturally Based – Apples, Pears, Soft Fruits, Hops and Livestock Area Climate –Semi-arid –8 inches of rain –300+days of sunshine Population Statistics –Yakima – 81,000 –Urban Area - 115,000 –Yakima County – 215,000
Yakima Location Map
Dispatch Information Calls taken in 2003 – Police calls – 86,897 – Fire calls – 13,314 – 911 calls – 131,592
Objectives GIS Basics Geo-coding AVL Server Concepts Unit Recommendation Concepts Dispatch Mapping (CadGIS)
A Definition of GIS GIS is a System of computer software, hardware and data, and personnel to help manipulate, analyze and present information that is tied to a spatial location – spatial location – usually a geographic location information – visualization of analysis of data system – linking software, hardware, data personnel – a thinking explorer who is key to the power of GIS
Geographic Information Systems A method to visualize, manipulate, analyze and display spatial data “Smart Maps” that link databases to a map How many, what kinds, where are they? Combine data from many different sources 80% of all data has some spatial component
Data – Data – Data Location Data –How many – What kind – Where Scale of Data –Local to Global Data Presentation –Words, Charts, Graphs, Tables or Maps Exploring Data with GIS turns data into Information into knowledge
What is NOT GIS… GPS – Global Positioning System A Static Map – Paper or Digital –Maps are often a product of GIS –A way to visualize the Analysis A Software Package
Database “Not Easy to Interpret”
Visualization “Worth a Thousand Words”
Two Ways to Input and Visualize Data Raster – Grid “pixels” A location and value Satellite image and aerial photos are in this format Vector – Linear Points, Lines & Polygons “Features” (house,lake, etc) Attributes size, type, length, etc.
Sources of Data All departments contribute One central repository Ease of sharing Ease of maintenance Other agencies Vendors
Geographic Inquiry means delving into Knowing where Seeing Patterns Finding Relationships Querying Geography Monitoring Change Linking Observation and Research
Introduction to Geocoding
Geocoding Primer Each line has specific attributes Line direction is important Use accurate address ranges to prevent stacking Interpolation is used for placement of approximate address
Geocoding Slide Demo
Geocoding Slide Demo II
Geocoding Slide Demo III
Adding other attributes… Maintain Area, District, Beat, etc… Done to minimize maintenance One file to import Two passes through one file – for hundred block – for intersection Zip codes versus Jurisdictions
Police Districts
Using GIS to Update the SafetyNet CAD Geofile
CAD GEOFILE GIS Interface Originally tried to match events –Poor match rate 50-60% –Inconsistent addresses –Spatial and tabular alignment necessary
CAD GEOFILE GIS Interface (contd) Street Centerlines used to update GEOFILE –Contains address ranges and area/district information –Key to standardizing addresses –Improves quality of spatial and tabular data –Get 99.5% match rate –Improves quality of other geocoding applications –Simplest way to turn tabular data into spatial data
Updating the Geofile things to be aware of… Does not delete records Intersections – 2 way vs 3 way –Matching nodes create intersections Change in the beginning block number creates a new Geofile record. –May be overlapping Does not change “AD” types BOLO verify to HB AD verified to HB Continued…
Things to be aware of… continued Modifying AD – does not check to HB for area, district, beat, zip code…
Updating the Geofile Still do manual corrections but then update the street centerlines Somewhat manual process – hope to fully integrate Very quick to update when boundaries change
How do you get started? Street Centerlines are a must –Several Vendors sell accurate streets files Mark Boundaries for beats, areas districts etc… Match against current events Make corrections as necessary
Geocoding Conclusions… Simplified from our first methodology Build a better match rate the is constantly improving Changing area, district, beat boundaries is visual and much simpler Improved quality for other geocoding applications Not as scary as it might sound
Automated Vehicle Locations Need to have accurate ambulance locations Uses CDPD communication technology GPS option was inexpensive GPS Accuracy – +/- 15 foot position quality –Differential Corrections not necessary –DoD Selective Availability Easy to setup each vehicle. Side benefits: Unit recommendation, unit/event analysis, and pursuit path analyses
CDPD GPS AVL Equipment GPS Antenna CDPD Antenna
AVL Server Single, central application Receives and processes all GPS messages Displays GPS status of units Allows for configuration of units remotely Forwards location information to CAD server and other locations if needed.
AVL Server
AVL TAIP
Unit Recommendations Methods of choosing which vehicles to send to an event: –General Area –Proximity to an event –Modeled impedance and route
Dispatched by Area
Dispatched by Proximity
Dispatched by Impedance AM minutes 6.47 miles ALS minutes 5.77 miles
Impedance Routing Impedance routing –Choose units by a modeled path –Turning movements –Road closures –One way streets –Show optimum calculated path –Create driving directions for path –Index of streets can be easily updated
SafetyNet Interface CAD Queries –Travel times for a number of units to an address –Driving directions for a unit to an address –Address based on vehicle’s position –Open and closing of streets
CADTravel
Driving Directions
Driving Directions II
Reverse Geo-coding ‘=‘ triggers CAD to retrieve the last known GPS position of the unit
CADTravel Road Closure
Unit Recommendation Proofing Create map showing event and vehicle positions Circle the outermost unit dispatched. Any available units inside the circle? Results and features – show paths taken in a pursuit – multiple vehicles can be shown – event and unit analysis
Unit Proofing
Web Unit Proofing
CadGIS – Dispatch Mapping Integrated Mapping Application –Can be used as a stand alone mapping application –Integrated with SafetyNet CAD to display events and vehicles in real time –Generically designed (not specifically for Yakima) –Each user can customize the map display
CadGIS
CadGIS Toolbars
SafetyNet Messaging Pending Events Active Events Vehicle Positions ALI Information (land line, phase I & II) Status Changes Event Zooming
CadGIS Aerial Photo
CadGIS Prefire Plans
CadGIS Map ALI I
CadGIS Map ALI II
CadGIS Map ALI III
MobileClient and MobileGIS Same basic functionality as CadGIS Events and vehicles are snapshots. Runs within MobileClient
MobileGIS
YFD Preferred Mobile Unit
When things go wrong… Network connections Vehicles not initializing Please pay your phone bill Firing Center Activity
GPS Gone Gonzo…
Conclusions… Improved spatial and tabular data quality Real Time event and vehicle tracking Efficient unit recommendations Visual Analysis tools
CadGIS Demonstration
For More Information Tom E Sellsted City of Yakima, Washington