The Effect of the Deer Population on the Number of Car Accidents
Journal of Environmental and Resource Economics at Colby
Volume 3 | Issue 1
Article 14
2016
The Effect of the Deer Population on the Number
of Car Accidents
Timothy J. Hallock Jr
Colby College,
Follow this and additional works at: https://digitalcommons.colby.edu/jerec
Part of the Agricultural and Resource Economics Commons, Agricultural Economics Commons,
Economics Commons, Forest Management Commons, and the Natural Resource Economics
Commons
Recommended Citation
Hallock, Timothy J. Jr (2016) "The Effect of the Deer Population on the Number of Car Accidents," Journal of Environmental and
Resource Economics at Colby: Vol. 3 : Iss. 1 , Article 14.
Available at: https://digitalcommons.colby.edu/jerec/vol3/iss1/14
This Article is brought to you for free and open access by Digital Commons @ Colby. It has been accepted for inclusion in Journal of Environmental
and Resource Economics at Colby by an authorized editor of Digital Commons @ Colby. For more information, please contact .
The Effect of the Deer Population on the Number of Car Accidents
Abstract
This paper examines the relationship between the deer population and the number of car accidents in New
York State from 2002-2012. Data collected includes information on the amount of deer hunted, the number of
car accidents, and the number of hunting permits issued. This paper also involves a county level analysis
within New York State of 56 counties from 2007 - 2012. An important part of analysis of this paper is the
examination of the Buck population vs. the Doe population on the number of car accidents. This is an
important study because of its possible policy implications regarding the amount of deer hunting permits that
should be distributed, and its effects on the deer population and the amount of car accidents.
Keywords
car accidents, deer, permits
This article is available in Journal of Environmental and Resource Economics at Colby: https://digitalcommons.colby.edu/jerec/vol3/
iss1/14
Hallock: Deer Population and Car Accidents
THIS ARTICLE IS IN DRAFT FORM
Introduction:
New Yorker’s true neighbors are in fact the White-Tailed Deer. With an
abundant population, deer are seemingly ubiquitous. Because of their thriving
population, car accidents are unfortunately common and drivers must always be on
the look out for one to dash across the road at any moment. If left unattended, the
deer population could escalate out of control causing more problems for drivers and
could throw off the balance in the ecosystem. The Department of Environmental
Conservation (DEC) attempts to limit the deer population through the issuance of
hunting permits. The DEC adjusts the number of permits they issue year to year in
order to achieve the desired effect on the deer population. If they want to reduce
the number of deer in the population, they will issue more hunting permits the
following year. My hypothesis is that an increase in the amount of deer killed in
New York State will lead to a reduction in the amount of car accidents caused by
deer. In theory, the more hunting permits that are issued by the DEC, will lead to
more deer being taken by hunters in that season, which would lead to less deer out
on the road that could possibly be hit by a car. This is an important topic because
reducing the amount of car accidents caused by deer will lead to less injuries for
the people driving the car, and would also save these people money because if they
aren’t hitting the deer their car is not going to be damaged or possibly even totaled.
Another reason for controlling the deer population is to keep the ecosystem in
equilibrium. Too high of a deer population could lead to the deer venturing out of
the woods even more and result in them grazing and eating expensive landscaping
outside of homes.
Previous Literature:
Other studies have looked at alternative ways of reducing the amount of
deer-vehicle crashes (DVC’s), besides reducing the deer population. Three
approaches that James H. Hedlund, Paul D. Curtis, Gwen Curtis, and Allan F.
Williams study in their paper, “Methods to Reduce Traffic Crashes Involving Deer:
What Works and What Does Not” include modifying driver behavior, modifying
deer behavior, or reducing the number of deer. Some methods for effecting drivers
behavior include better education of the driver, whether it be through more
published news articles about DVC’s, or putting up signs in areas where deer are
commonly known to dart across the road. However, altering deer behavior seems
to be a more effective way to reduce the amount of DVC’s on the road. Numerous
studies over the past years have indicated that properly designed and maintained
fencing, used together with appropriate underpass, overpass, and one-way deer
gates, is the most effective method for reducing DVCs in the United States
THIS ARTICLE IS IN DRAFT FORM
Published by Digital Commons @ Colby, 2016
1
Journal of Environmental and Resource Economics at Colby, Vol. 3 [2016], Iss. 1, Art. 14
THIS ARTICLE IS IN DRAFT FORM
(Danielson and Hubbard, 1998). Less effective methods at altering deer behavior
are repellents and deer whistles on cars that make an unpleasant noise to deer in
hope that it will keep them away. Finally, deer herd reduction is an appropriate
method for reducing DVC’s as well as crop and garden losses caused by deer
(DeNicola et al., 2000). Other work shows that the state transportation department
rated herd management as potentially the most effective DVC control strategy,
while state wildlife administrators rated it second behind the effective fencing
technique (Sullivan and Messmer, 2003). My paper differs because it also looks at
the number of hunting permits that were issued over the years, and breaks down the
deer population into Bucks and Does to see if the gender of the deer has an effect
on car crashes. Theoretically, more hunting permits should lead to more deer being
killed. However, if hunters simply obtained a permit and never utilized it, the deer
population would not be altered because not enough are being hunted.
Data:
In order to test my hypothesis that if hunters take more deer we will see a
reduction in the amount of car accidents, I gathered data from the New York State
Department of Motor Vehicles, and the New York State Department of
Environmental Conservation. From the New York State Department of Motor
Vehicles I was able to find summaries for Motor Vehicle Accidents in New York
State from 2002-2013. From Table 7(p) we can find a row that reads “Accidents
with Environmental Factors” and specifically “Animals Action” which is accidents
due to animals. In this paper we proxy Animals Action for DVC’s. Although this
is not a direct number of accidents caused only by deer, it is reasonable to assume
that the vast majority of these accidents from animal’s action were caused by deer,
since other animals you typically would see on the road from car collisions are too
small to cause any real damage worth reporting. The N (...truncated)