Time Based Run Cards - Recent...

Time Based Run Cards: Better Fire/EMS Response in Prince George's County

2016 ESRI UC

The Department• Largest combination department in North

America

• 46 Stations

• 76 Engines, Trucks & Squads

• 155 EMS

• Specialized Services

• 2,400 responders

• Over 130,000 calls for service

2016 ESRI UC

• 30 years IT & Public Safety Background

Dispatcher, Programmer/Analyst, MIS

Coordinator, Background Investigator

• UMD BS Geography/GIS + Studio Art

• MSGIC Member

Charlie the Intern

2016 ESRI UC

• Box areas based on time

• Sensible measurement points

• Limited Access Highway merge points

Goals

Strategy

• Closest Facility to address points

• 270 stations

• 250,000 address points

• 150 highway merge points

• 1.25M routes for Box Areas

• 67.5M routes for run cards

2016 ESRI UC

General Process

• NA/CF: stations, address points, restrictions

• Update incidents with stations

• Assign box numbers

• Spatial Join address points to parcels for boxes

• Dissolve parcels on base box area

2016 ESRI UC

General Processcontinued

• Parcels to centerlines; Topology

for gaps & overlaps

• 1500’ NA/SA intersect address

points for hydrant zone

• Central address point for box area

measurements

• NA/CF for 270 stations to central

feature and merge points

• Export to Excel and reformat for

CAD

2016 ESRI UC

Challenges & Solutions

2016 ESRI UC

Collecting missing data (stations and hydrants)

• Collector App to capture private hydrant locations.

• Professional organization contacts (MSGIC).

• Internet browser “screen scrapes.”

• Phone calls.

Challenges & Solutions

2016 ESRI UC

Relocating Stations • Solve Closest Facility for new (and old) locations.

• Model and Python script that swaps old and new sites.

Challenges & Solutions

2016 ESRI UC

Unexpected Routing

Results

• Remove small turn-off ramps to prevent red light avoidance.

• Add Network Location Tool & Zoom to find network disconnects.

• Expand use of ESRI Tools during

development.

• Validate and collect data.

• Test - Edit – Repeat.

• Unit conversions.

• Imagery & knowledge of the area.

• Live with compromises.

Lessons Learned

2016 ESRI UC

Contacts

2016 ESRI UC

Mark E. Brady,

Fire/EMS PIO:

301-883-7154

mebrady@co.pg.md.us

Patrick Callahan,

OIT-GIS Manager:

301-883-5343

PTCallahan@co.pg.md.us

Charles M. Wrenn III,

Fire/EMS:

301-883-5786

cmwrenn@co.pg.md.us