Spatiotemporal analysis of vehicle collisions involving wild boar and roe deer in NW Spain.
Ungulate-vehicle collisions pose a serious traffic safety hazard in the North of Spain. The understanding of underlying temporal and spatial structure of these non-random events is imperative to develop appropriate mitigation measures. This study analyses the temporal, spatial and spatiotemporal patterns of car crashes involving wild boar and roe deer in the province of Lugo (NW Spain) in the period 2006-2010 using geographic information systems (GIS) and spatial statistics. The temporal analysis--conducted at three scales: daily, weekly and seasonal--revealed that accidents are related to specific animal's life cycles and to interactions with human activities. The localization of collision points with GIS discovered the sections of the autonomic road network where accidents with the two studied species concentrate. Besides, the spatial arrangement of significant hotspots was mapped through kernel density estimation over two time scales (daily and seasonal), distinguishing among 41 sets, sequentially arranged to facilitate clustering comparison and determination of spatiotemporal risky areas. This work is of valuable help for road managers to design the appropriate mitigation measures that will improve traffic safety and animal welfare.
Department of Agroforestry Engineering, University of Santiago de Compostela, Research Group 1716 Projects and Planning (Proepla), Campus Universitario s/n, 27002 Lugo, Spain. Electronic address: b.rodriguez-morales@hotmail.com.
Beatriz
B
Rodríguez-Morales
Emilio Rafael
ER
Díaz-Varela
Manuel Francisco
MF
Marey-Pérez
D000063:Accidents, Traffic / Q000517:prevention & control / Q000706:statistics & numerical data*; D000818:Animals; D016000:Cluster Analysis; D016208:Databases, Factual; D003670:Deer; D004779:Environment Design; D040362:Geographic Information Systems; D006801:Humans; D015233:Models, Statistical; D012307:Risk Factors; D012449:Safety; D012621:Seasons; D013030:Spain; D062211:Spatio-Temporal Analysis; D034421:Sus scrofa
Geographic information systems; Kernel density estimation; Mitigation measures; Road ecology; Spatiotemporal analysis; Ungulate–vehicle collisions