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:: Volume 3, Issue 2 (9-2015) ::
jgit 2015, 3(2): 21-42 Back to browse issues page
Spatial Analysis of Accidents at the Suburban Intersections Using Kernel Density Estimation and Spatial Autocorrelation Methods
Saye Zeynali * , Farhad Hosseinali , Abolghasem Sadeghi Niaraki , Mohammad Kazemi Beydokhti , Meysam Effati
Shahid Rajaee Teacher Training University
Abstract:   (6497 Views)

Today, the high number of the rural road accidents has shown that accidents at intersections organize high percentage of the total number of accidents. Meanwhile, the geographical information system (GIS) is considered as an appropriate tool for doing spatial analysis and analysis of accidents at intersections. Also, considering that the accident data are massive and non-homogenized, the methods of spatial autocorrelation and kernel estimation can present connected and more real models than samples of current spots in rural road accidents. The purpose of this research is spatial analysis of rural road accidents based on rural intersection or utilizing spatial autocorrelation methods and estimation of kernel density. In the first stage, it considers appropriate criteria for spatial analysis of accidents in the old roads of Karaj-Qazvin in the 1388-1392 periods and were weighted by use of fuzzy analytic hierarchy process. Then, to identify accident prone intersections and investigation of their characteristics from autocorrelation functions of Getis-Ord Gi*, Anselin Local Moran's I and the kernel density estimation was used in order to investigate the spatial autocorrelation, each of the useable parameters in five successive years used as a Moran's I function. The results have shown that there are 26 accident-prone intersections towards Karaj-Qazvin path and 10 accident-prone intersections for returning, from the total intersections of two way path. Also, for path towards Karaj-Qazvin none of the parameters and for returning path the only parameter of accident type contained spatial autocorrelation in the five successive years.

Keywords: Road accident, Intersection, Spatial autocorrelation methods, Kernel density Estimation, GIS
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Type of Study: Research |
Received: 2016/03/11 | Accepted: 2016/03/11 | Published: 2016/03/11
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Zeynali S, Hosseinali F, Sadeghi Niaraki A, Kazemi Beydokhti M, Effati M. Spatial Analysis of Accidents at the Suburban Intersections Using Kernel Density Estimation and Spatial Autocorrelation Methods. jgit 2015; 3 (2) :21-42
URL: http://jgit.kntu.ac.ir/article-1-229-en.html

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Volume 3, Issue 2 (9-2015) Back to browse issues page
نشریه علمی-پژوهشی مهندسی فناوری اطلاعات مکانی Engineering Journal of Geospatial Information Technology
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