Accidents black spots on highways and their low cost remedial measures

摘要

It is imperative to identify and analyze the presence of black spots on highways with key causes of road accidents that have taken place previously. It is quite difficult to investigate and analyze the available accident data, mainly because of geometric conditions, traffic and vehicles speeds. It has been revealed in this study that most of the accidents at black spots occurred due to speedy and aggressive driving of road users. Geometric conditions have comparatively less contribution in accidents. Furthermore, most of the accidents happened in broad day light rather than at night. In order to have safe and smooth flow of traffic on urban highways, encroachments within the right of way should be cleared off and separate service roads should be provided for local traffic. Low cost remedial measures like road marking, signs, signals, enforcement, slight geometric improvement can reduce the black spots.