The
Atlanta Police
Department
2010 Zone and Beat Redesign Overv
4/9/2015
The Objective:
Chief Turner has charged
The Field Operations Division and
The Planning and Research/ Accreditation Unit to:
• Analyze the Patrol Beats and Zones for the purpose
of determining current workload distribution; and
• Redesign the Beats and Zones where necessary to
balance workload distribution and improves service
delivery.
4/9/2015
The Objective:
• The Atlanta Police Department formed a
Zone and Beat Redesign Committee.
• The Analytical and Management issues are:
- Resource Allocation
- Zone and Beat Redesign
- Resource Determination
4/9/2015
Resource Allocation:
The Department can and should:
1.
Allocate its call-answering personnel
to the Zones and to the watches :
- the allocation should be in
proportion to the patrol
workload.
4/9/2015
Zone and Beat Redesign :
Chief Turner has also charged the
Zone and Beat Redesigning Committee with:
•
Analyzing the patterns of calls for service; and
•
Re-drawing Zone and Beat lines.
4/9/2015
Resource Determination:
The Zone and Beat Redesign Committee has:
• Analyzed its Calls-for-Service (CFS) workload;
• Evaluated the response times to high priority calls;
• Assessed the officers’ available time for community
policing and other proactive work; and
• Analyzed other factors, i.e. natural boundaries,
interstates, railroad lines.
4/9/2015
The Introduction:
“The
Zones”
The Zones are organized as follows:
• Mobile Operations
• Investigations
• Field Investigation Team (FIT) and the Zone Discretionary Unit (ZDU)
•
Foot Patrol Units
• Mini-Precincts
4/9/2015
The Introduction:
“The Zones”
Patrol Zones:
•
•
•
•
•
•
Zone 1 (West Atlanta)
Zone 2 (North Atlanta)
Zone 3 (Southeast Atlanta)
Zone 4 (Southwest Atlanta)
Zone 5 (Downtown-Midtown)
Zone 6 (East Atlanta)
4/9/2015
“The Beats” :
• The Beat’s Defined Geographic Area.
• The Beat Officer’s Expectations.
• When the Beat is not busy, the Beat Officer may:
– actively patrol the Beat;
– look for problems to be addressed; and
– talk with community members.
• When the designated Beat is very busy, other officers may:
– answer calls in the Beat, or
– be assigned to the Beat.
4/9/2015
“The Beats” :
• The Distribution of Beats.
• The Beats Design.
•
The Connection of Beats to Neighborhoods.
• Resolving Problems within the Beats.
• Assignment of officers to Beats.
4/9/2015
The Redistricting Process:
• The basic process of redesigning the
Zones and Beats included:
– The evaluation of the Calls-for-Service (CFS)
workload data; and
– The formation of appropriate geographic areas with
roughly equal demand for police service.
4/9/2015
The Redesign Process
(Considerations):
• Basing the Beats on the Zone boundaries;
• The Zone and Beat Redesign Financial Projections;
• The Zone Precincts’ Transfers;
• The Redesign of the Beats and the Cost of the
Projected Project; and
• Reallocating Infrastructure Expenses.
4/9/2015
Workload Measurements:
The workload assessment for the Zone/Beat Redesign project was based on
dispatched 911 calls for police service from July 2009 – June 2010.
The following calls are excluded from the measure:
• Calls of an administrative nature
• Officer initiated incidents
• Incidents serviced by the Georgia State Patrol and other
agencies
• Cancelled calls for service
• Calls with invalid latitude/longitude fields
• Calls serviced by Tele- Serve
4/9/2015
Workload Measurements:
• The calls were categorized by their initial call type (signal) and
their final disposition code.
• Every call in the categories received the same Workload Scores.
• The Workload Scores were calculated, as follows:
Workload Calculation:
1.
2.
3.
4.
The call length was calculated.
The calls where more than one Officer was dispatched were multiplied.
The average call length was calculated.
Each call in a given category was assigned the average Workload Score.
4/9/2015
Workload Ratings:
• The Workload Scores of all calls in the given Beat’s were
summed, indicating that Beat’s total workload.
• Each beat’s total Workload Score was then scaled into a
standard Workload Rating .
• The Workload Rating is a scale set such that a Beat with an
average Workload Score would have a Rating of 100.
•
A Beat that has a Workload Rating of 120 has a workload
20% greater than average.
4/9/2015
Current Zones and Beats
Zone
Number of Beats
Area (Mi2)
Workload Rating
Above/Below
Average
Zone 1
11
18.6
1023
-7.0%
Zone 2
10
36.1
898
-18.3%
Zone 3
12
21.0
1191
8.3%
Zone 4
11
32.8
1274
15.9%
Zone 5
11
8.2
1251
13.7%
Zone 6
11
16.7
963
-12.5%
The Targeted Workload Rating Per Zone is 1100
4/9/2015
Current Beat Workload
Distribution
(The City is currently divided into 66 beats of varying sizes.)
The following is based on the calculation of the Workload Ratings for each beat:
Above Average Beats
Below Average Beats
Beat
Workload
Rating
201
23
504
46
159
312
47
501
151
601
52
508
140
605
52
413
138
202
53
506
134
110
55
410
131
606
60
412
130
108
66
Beat
Workload
Rating
408
187
303
160
204
Beats with Workloads Outside
of Acceptable Range:
4/9/2015
The
Zone and Beat
Redesign
Plan
4/9/2015
The
Zone and Beat Redesign Plan
• The Plan is elucidated below:
• “Zones and Beats Redesigned with Additional Beats
Added”:
•
The Department can Redesign the Beats and Zone
and add 12 more Beats .
4/9/2015
“Zones and Beats Redesigned with Additional Beats Added”
(Adding Officers to the Zones)
Number of Beats
Square Miles
Square Miles Per Patrol
Officer
Current
Proposed
Current
Proposed
Current
Proposed
Zone 1
11
14
18.6
20.0
1.7
1.4
Zone 2
10
13
36.1
39.5
3.6
3.0
Zone 3
12
13
21.0
20.9
1.8
1.6
Zone 4
11
14
32.8
31.3
3.0
2.2
Zone 5
11
12
8.3
6.8
0.8
0.6
Zone 6
11
12
16.7
15.0
1.5
1.3
Total Beats
66
78
4/9/2015
Balancing Zone Workload
% Above/ Below
Average Workload
Workload Rating
Current
With Changes
Current
With Changes
Zone 1
1031
1161
-6.3%
5.5%
Zone 2
891
1051
-19.0%
-4.5%
Zone 3
1175
1158
6.8%
5.3%
Zone 4
1267
1144
15.2%
4.0%
Zone 5
1246
1030
13.3%
-6.4%
Zone6
990
1055
-10.0%
-4.1%
Target Workload
1100
“Zones and Beats Redesigned with Additional Beats Added”
4/9/2015
“Zones and Beats Redesigned with Additional Beats
Added”
Logistical Considerations:
Zones:
Vehicle Changes
Personnel
Changes
Zone 1
+3 patrol cars
+15 officers
Zone 2
+3 patrol cars
+15 officers
Zone 3
+1 patrol car
+5 officers
Zone 4
+3 patrol cars
+15 officers
Zone 5
+1 patrol cars
+5 officers
Zone 6
+1 patrol cars
+5 officers
+12 patrol cars*
+ 60 officers*
Total
Implementation Costs:
Redesigned Beat layout for CAD system: $57,000
Additional vehicles and officers are already included in current budget
4/9/2015
25
Implementation
Timeline
Six Weeks

Contractor completes detailed
Redesigning layout for CAD system.

Implement Redesigned Beat plan
into CAD system.

Transfer officers and equipment to
fill new Beat assignments.
March 2011
4/9/2015
The Revised Beats
4/9/2015
Zone One
4/9/2015
Zone Two
4/9/2015
Zone Three
4/9/2015
Zone Four
4/9/2015
Zone Five
4/9/2015
Zone Six
4/9/2015
The End
Questions and Answers:
Chief George Turner
Assistant Chief Peter Andresen
4/9/2015
Deputy Chief Ernest Finley
Deputy Chief Shawn Jones
Deputy Chief Calvin Moss