city of yakima, washington 911 cad/avl/gps applications

City of Yakima, Washington911 CAD/AVL/GPSApplicationsTom 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 GISGIS 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 intoInformation 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 HBContinued…

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

AM018.56 minutes6.47 miles

ALS76.40 minutes5.77 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

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 SellstedCity of Yakima, WashingtonTsellste@ci.yakima.wa.ushttp://www.ci.yakima.wa.us/gis