GIS Analysis on Road Accident and Road Safety: A Case Study of Road Geometry in Kajang, Selangor

Abstract

Malaysia has recorded the 8th highest number of fatal road accident. This is due to a few factors such as inexperience, incapacity and risk behaviours of driving. Other than that, road conditions also play a role. Road Accidents need to be seriously taken into action by the government and agencies involving in road safety. Geographical Information System (GIS) technology had been used in this study to store, retrieve and view data for number of accidents that occurred and to compare with road geometry characteristics. This study focused on the relationship between road geometry and road accident cases in chosen study area which is Kajang, Selangor. GIS offers various advantages thanks to its integrated statistical analytical capabilities. GIS technology has widely been used to process the map of accident-prone locations. Moran’s I technique is a tool used that measures the overall spatial autocorrelation for this study. The relationship between road geometries and road accidents was determined with the use of Getis Ord Gi* tools that is provided in GIS technology. By identifying the hotspot location, spatial analysis is very helpful and can provide a technique to increase the safety of these accident locations. At the end of this study, map of hotspot accident location and the connection between road geometries had been successfully analysed where it was found that accidents occur most frequently in T-intersection where is was recorded the highest number of accident cases for the intersection type. &nbsp