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Police Operations and Data Analysis Report, Morgan Hill, California
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About 500 events (2 percent) involved patrol units spending zero time on scene.
Approximately 12 percent of other-initiated calls lacked any recorded arrival time. We used
the remaining calls when measuring the department’s overall response times.
The computer-aided dispatch (CAD) system used approximately 130 different event
descriptions, which we condensed to 15 categories for our tables and 9 categories for our
figures (shown in Chart 8-1). Table 8-20 in the appendix shows how each call description
was categorized.
Between January 1, 2015, and December 31, 2015, the communications center recorded
approximately 26,700 events that were assigned call numbers and which included an adequate
record of a responding patrol unit as either the primary or secondary unit. When measured daily,
the department reported an average of 73 patrol-related events per day, approximately 2 percent of
which (1.5 per day) had fewer than 30 seconds spent on the call.
In the following pages we show two types of data: activity and workload. The activity levels are
measured by the average number of calls per day, broken down by the type and origin of the calls
and categorized by the nature of the calls (crime, traffic, etc.). Workloads are measured in average
work-hours per day.
CHART 8-1: Event Descriptions for Tables and Figures
Table Category
Figure Category
Prisoner–arrest
Arrest
Assist other agency
Assist
Crime–persons
Crime
Crime–property
Directed patrol
Directed patrol
Animal
General noncriminal
Juvenile
Miscellaneous
Alarm
Investigations
Check/investigation
Medical
Medical
Disturbance
Suspicious incident
Suspicious person/vehicle
Accident
Traffic
Traffic enforcement