Abstract:
This abstract reports the outcomes of a study carried out develop a Traffic Accident Analysis
System (TAAS) and determine accident hotspots using GIS. Developed TAAS is based on SQL
and ArcGIS. Developed TAAS is an all in one system where traffic data collection, editing, and
visualization can be performed. TAAS visualize the traffic accident data on a Sri Lankan Road
map. The GUI was designed by Visual Studio 2010 (C#).Traffic accident data in Elpitiya police
division for the AA class road s from 2006 to 2010 (322 accidents) was used to develop the
software. Software was designed so that later more data can be added as they are available. Traffic
data from Excel was converted into a shp with point features and superimposed on a line feature
class having roads of Sri Lanka. GUI has two panels; right side panel shows the digital map, which
was imported from the ArcGIS and the left panel shows the commands and controls. Facility was
provided for categorizing the accident data, adding and editing accident data. The database has
been directly linked to this GUI and the managing the accident data occurred through database.
First stable version of the TAAS provided some analytical features. Using TAAS two segments
were identified as having more traffic accidents they are; the road section from 61km to 63km
(Bentota) and from 78km to 86km (from Balapitiya to Ambalangoda). In between those areas the
highest risky locations are near to the 85 km to 86km (Ambalangoda area). Though this is the
initial stage of the created application, this system can give a better solution for the lack of a system
for visualizing traffic accident data. By this Traffic Accident Analysis System (TAAS) the accident
prone areas can be identified directly by digital map.