Development and evaluation of strategies to reduce the incidence of deer-vehicle collisions (phase III) : operational field trail, part A.
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2014-11-01
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Abstract:To better understand deer movements that might contribute to deer-vehicle collisions (DVC), we conducted preparatory field work ; necessary for an operational field trial of the efficacy of a 1.2-m woven-wire fence with a top-mounted outrigger. We worked with ; officials from GDOT and the Federal Highway Administration-Georgia Division to select a 5-mile segment of I-20 near Madison, ; Georgia. During February-June 2012 and January-April 2013, we captured 32 deer within the 5-mile test roadway and fitted them ; each with a Global Positioning System collar, programmed to collect 24 locations per day, and monitored surviving deer until April ; 2014. Each deer was classified as: (1) frequent user, (2) occasional user, or (3) rare user based on highway right-of-way (ROW) ; utilization. Frequent users (359.5 + 41.7 m) were closer (P < 0.01; F2, 27=8.46) to the median of I-20 than occasional (715.3 + 236.4 m) ; and rare (766.6 + 72.3 m) users, but occasional and rare users were the same distance (P > 0.05) from the median. Within the frequent ; user group, the percentage of ROW locations for individuals ranged from 1.7% to 25.8%. Deer ROW use occurred primarily during ; nighttime hours with about 37% of locations within the ROW occurring between 2200-0300 hours. Increased ROW use by female ; deer that were frequent users during May and June was likely due to females selecting the ROW for parturition. We also evaluated the ; annual distribution of DVCs in Georgia based on records of DVCs from 2005-2012 (n = 45,811) to identify peaks in DVCs for each of ; Georgia’s 159 counties, compared to deer breeding data from the Georgia Department of Natural Resources. We observed high ; concurrence among timing of peak DVCs, peak conception, and peak rut movement. To potentially reduce DVC risk, we recommend: ; (1) lethal removal of frequent ROW users, (2) warning motorists of the increased risk of encountering deer in the ROW during deer ; breeding seasons and while driving late at night, and/or (3) modifying ROW habitat to help maintain ROW fences and reduce food ; and cover resources that can attract deer to roadways.
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Main Document Checksum:urn:sha256:beddfed76cc811378199b1a2ab6989bcae8debe4c01a6af7ad888b1d79138670