Estimation of Congestion and Level of Service for Improvement Plan of Urban Road

The aim of this research is determine the alternative route for improving level of service for urban roads. Alternative route provides road good driving manoeuvre for road users and it is save human hour from the congestion. Through literature review and case study, a systematic approach and techniques to improve alternative route will be developing. A rapidly growing component of urban transportation problems in the cities across the world is problem of traffic congestion. It is believed that identification of congestion is the first step for selecting appropriate mitigation measures. Because of population, economic and vehicle ownership growth, increasing traffic demand exceeds the carrying capacity of the intersection during peak periods, which causes congestion. The congested and hazardous traffic conditions in the city increase fuel consumption of the vehicles, causes noise and air pollution, delay and accidents. In Ahmedabad city, most of arterial roads are congested. An attempt has been made to quantify congestion with delay, speed and volume to capacity ratio. There is a need for defining traffic congestion on rational bases and use that for measurement LOS (Level of Service) of roads. The congestion is measured by determining the level of service of the street (LOS) through calculating the traffic flow rate of the street and free flow rate. For determining peak hour traffic volume is calculated through videography of vehicles and multiplying by passenger car Unit (PCU). Level of service is determined by volume capacity ratio. Public opinion survey is necessary for the alternative route.