ASSESSMENT OF VEHICLES ACCIDENT AT HORIZONTAL CURVES

Abstract

Horizontal curves are usually considered as the critical points within the urban and rural road network and the evaluation of their performance provides valuable understanding and useful indication about the performance of the road network system. The existing roads design does not provide adequate facilities horizontal curve length and hence,there exists a constant crush of vehicles in tied curve length of the road. At horizontal curves, vehicles crossing behavior is even more complex since the drivers have very little response time to control the vehicles, particularly in urban areas. All these issues are pointing towards the research work required for studying the road travel behavior of vehicles and pedestrians at horizontal curves. Pedestrian is one of the important component in transportation system and also vulnerable at locations under mixed traffic conditions. At horizontal curve, some of the vehicles may yield to pedestrians who are already at crosswalk location. However, some of the pedestrians are using forced gaps to cross the road. Hence, while pedestrians use the curve crosswalk with forced gaps,which decreases the vehicular flow characteristics.The pedestrian sidewalks do not show a direct effect on the vehicular flow characteristics. The present study has analyzed the characteristics of vehicular flow at horizontal curve under traffic conditions. The results indicate that the speed of vehicles at horizontal curve is main issues that increases vehicles accident. The study results may be useful for decreasing the vehicles accident at horizontal curves. The result of this study indicates that the studied horizontal curve sodo to maracare, maracare to dalbo gebrial, dalbo gebrial to boditi city, boditi city to shone currently high traffic accident. Thus, after carrying out additional detail investigation and taking into consideration future traffic growth appropriate improvement should be made by concerned bodies as soon as possible.