ASSESSMENT ON ACCIDENT ZONES IN COIMBATORE CITY LIMITS USING GIS TECHNIQUES

The most important negative impact of road system, is the accidents. This Report
presents some introductory stuff including some salient accident statistics, causes of accidents, accident
data collection, accident reconstruction, safety measures and safety audit. The prime goal of roadways
safety engineering is to limit the number as well as severity of traffic accidents by identifying,
implementing and evaluating measures to improve roadway safety. As the roadway improvements are
supposed to be applied to hazardous locations or accident hot spots where they have the most
momentous impact, identification of hot spots is a vital step in safety management. There is an ongoing
determination by road professional and academicians alike to examine most appropriate methods for
identifying road accidents hot spots. There is no universal definition of hot spot and it is open to wide
speculation. This research seeks to take advantage of GIS and spatial analysis to identify road accident
hot spots both visually and statistically and aims to show the usefulness of GIS and point pattern
techniques for defining road accident zones within Coimbatore city. One dimensional and two
dimensional clustering techniques for road accidents are identified. Advantages and drawbacks are
discussed in relation to traffic datas. Linear spatial clustering techniques appear to be better suited when
traffic flows can be clearly identified.