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IDENTIFICATION AND ANALYSIS OF ACCIDENT BLACK SPOTS USING GEOGRAPHIC INFORMATION SYSTEM

Liyamol Isen, Shibu A, Saran M. S

An Accident is a rare, multifactor event preceded by a situation or event wherein one or more road users failed to cope with road environment results vehicle collision.The location in a road where highest number of traffic accidents occurs is called a Black Spot. The recent study conducted by the Kerala Road Safety Authority (KRSA) found that, the maximum numbers of accident-prone stretches or the black spots are in Alappuzha and Ernakulam districts. The present study attempts to identify the most vulnerable accident black spots in these two districts using Geographic Information System. The study includes collection of secondary accident data and prioritizing the accident prone locations by using Weighted Severity Index (WSI) method. WSI method follows a system of assigning scores based on the number and severity of accidents in that particular location in the last three years. The evaluation of six identified black spots in Alappuzha district and ten in Ernakulam were done using ARCGIS 10.1 software package by incorporating field survey data.