Spatial Distribution of Accident Black Spots along Kaduna-Zaria Expressway, Nigeria

Abstract

An accident black spot has been explained in this paper as a place where accidents are concentrated. Potholes, feeder roads and sagging have been identified among other factors that cause road accidents along the study route. The devastating effects of these traffic crashes on the victims and properties cannot be over emphasised. This paper is therefore, a worthwhile effort to present stages that would mitigate future occurrence of road crashes to its barest minimum along the study route. Satellite images and Digital Elevation Model (DEM) of the study area were interpreted using ERDAS imagine version 9.1 to identify features termed to be accident black spots. In fact, seven different black spots were interpreted from the image. Arising from this, it is recommended that road infrastructure should be adequately maintained and road signs provided along the entire route.

Keywords: Black Spots, Sagging, Pothole, Ground Truthing, Road Infrastructure, Road Design.