Performance Analysis of Signalized Intersection at Metropolitan Area

Abstract

The aim of this paper is to measure the performance level of signalized intersections, based on traffic and geometric characteristics. The required field data were collected in Retteri signalized intersection, Chennai, India for 12 hours duration on weekdays. Traffic volume were analysed and peak hours volumes were estimated at morning and evening. Volume/Capacity (V/C) ratio was calculated by using IRC 106-1990. Vehicle delay was estimated by applying classical Webster’s formula and level of service (LOS). Traffic volumes were projected for next 10years. V/C ratio and delay values were 0.801 and 39sec respectively. The performance results at Retteri junction was LOS D based on V/C ratio and delay values. The projected volume was exceeding than maximum capacity in next four years from base year data. The performance analysis results were shown the over saturated conditions at Retteri junctions and the study was proposed flyover to reduce the congestion level and huge vehicle delay. The flyover was designed by using MX ROAD software. This study has shown that it is easy to describe the current performance conditions of particular signalized intersections and is expected to help traffic engineers, planners and policy makers understand the evaluation of particular signalized intersections under mixed traffic conditions.