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http://dx.doi.org/10.11108/kagis.2010.13.2.041

Comparison of Traffic Crash Characteristics Using Spatio-temporal Analysis in GIS-T  

Kim, Ho-Yong (Department of Civil, Architecture and Environment, Missouri University of Science and Technology)
Baik, Ho-Jong (School of Air Transport, Transportation, Logistics and Air & space Law, Korea Aerospace University)
Kim, Ji-Sook (Interdisciplinary Graduate Program in Geospatial Information, Pusan National University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.13, no.2, 2010 , pp. 41-53 More about this Journal
Abstract
Traffic safety assessment is often accomplished by analyzing the number of crashes occurring in some geographic space over certain specific time duration. In this paper, we introduce a procedure that can efficiently analyze spatial and temporal changes in traffic crashes before-and-after implementation of a certain traffic controlling measure. For the analysis, crash frequency data before-and-after closing a major highway around St. Louis in Missouri was collected through Transportation Management System(TMS) database that is maintained by Missouri Department of Transportation (MoDOT). In order to identify any spatial and temporal pattern in crashes, each crash is pinpointed on a map using the dynamic segmentation in GIS. Then, the identified pattern is statistically confirmed using an analysis of variance table. The advantage of this approach is to easily assess spatial and temporal trend of crashes that are not readily attainable otherwise. The results from this study can possibly be applied in enhancing the highway safety assessment procedure. This paper also makes several suggestions for future development of a comprehensive transportation data system in Korea which is similar to MoDOT's TMS database.
Keywords
TMS; Saptio-temporal GIS; Dynamic Segmentation; Crash Analysis;
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Times Cited By KSCI : 3  (Citation Analysis)
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