Driver’s Risk Compelling Behavior for Crossing Conflict Area at Three-Legged Uncontrolled Intersection

Abstract

Accidents on the junction of the rural highway have a high percentage compared to straight aligned roads. In this paper, the three-legged intersection on the highway has been analyzed based on classified traffic volume, gap acceptance parameter occupancy time, and road geometric features. The data set for two similar sections of state highway is considered. The value of the critical gap is estimated to understand the driver’s aggressiveness for the different vehicle types and geometric characteristics. The chances of accidents for heavy vehicles are less as compared to two-wheelers and four-wheelers as the critical gap and occupancy time for large vehicles are more. However, the speed of heavy vehicles like LCV, bus-truck decreases on turning movement, which reduces the severity of the accident. Nevertheless, the accident rate at the junction is higher due to other vehicle types as the driver tends to cross the conflict area as a priority. The driver’s aggressiveness and tendency to accept a small gap at the conflicting stream results in crashes. Therefore, at the right turning movements (as the left turn is free in develo** countries) of vehicles from the major and minor road are considered and concluded that at T-intersection of highways surrogate safety measure is required based on standard guidelines which need to be focused.