All Elk Grove Village police incidents are reported and captured in a
database where they can be managed over time. The introduction of GIS
in the village has provided the police department an opportunity to
enhance their perception and understanding of the distribution of
incidents by visually placing them on a map.
Since November of 2008, the police department has provided a monthly
report of various incidents that have occurred. An address or street
intersection is used to locate each reported event. Incidents being
mapped include motor vehicle burglaries, residential burglaries,
juvenile nuisance, criminal damage to property, thefts, stolen vehicles,
traffic crashes, and hit and runs.
While viewing these map products it becomes apparent where incidents
are being repeated. Geographic analysis allows for consideration of
adjacent facilities, institutions, and natural features such as parks
and schools that may influence these activities. Displaying this
information by police beat provides additional evaluation of how active
each area is and if personnel need to be distributed differently
throughout those beats. The report information includes the time of the
incident which could also provide insight into which areas may benefit
from patrol at certain times of the day.
A chart is also developed to track the quantity of incidents over
time. The chart is updated and provided every month and shows trends in
the number of incidents that have occurred. Reviewing this chart
provides an additional resource to consider the other factors that
contribute to the police incidents. For example, the relationship
between car accidents and the winter weather season or the correlation
between juvenile nuisance and summer vacation from school can be
inferred because those circumstances are limited to a certain part of
the year. Over time, this chart could potentially provide a measure of
police performance if incidents are being mitigated more effectively.
Recently a half year evaluation was conducted by compiling the data
for the first six months of the year. The resulting products highlight
the locations that are seeing repeated incidents and may validate a need
for increased police presence.
As previously mentioned, these products have just begun to provide
for increased understanding of these events and the use of GIS will
continue to support the Elk Grove Village Police Department by providing
decision support tools and analysis materials