Rotary Intersection Design at Solan Bypass

Abstract

This project involves design of Rotary Intersection at Solan bypass (H.P.) for smooth flow of traffic and also to avoid conflicts at the intersection. In recent years, the intense growth of vehicles has caused heavier traffic congestions on the roads and intersections, which are even worse during the peak traffic time. An intersection which is not proper designed as per IRC guidelines, will increase the travel time of the vehicles cause delays and also cause more traffic accidents or conflicts. Besides, if the channelization of the intersection is not reasonable, road surface deterioration will be more serious within the intersection area due to many factors such as frequent start-stop, slow speed. Therefore, it is necessary to make the design of the intersections more accurate and efficient. The basic principles considered for the design includes the principles of uniformity & simplicity, minimize conflict points, and alignment & profile. A detailed survey of the study area was conducted to determine the entry, and exit radius of rotary and peak hour traffic volume was estimated through traffic volume survey which is calculated manually. Traffic volume is incrementing at an alarming rate, so it becomes extremely difficult for traffic police to control the traffic manually at the intersections. For proper management of traffic stream at the Solan bypass (H.P.) intersection and to reduce the accidents at the crossing, there seems to be an urgent need to design a rotary intersection at the junction.