TRAFFIC MANAGEMENT AND BENEFIT ANALYSIS OF KORAL INTERCHANGE

Abstract

Purpose of this project is to do the benefit analysis of Koral interchange and traffic management during construction of KORAL Interchange. For benefit analysis the data collected is Classified Intersection Counts and Traffic Approaching Interchange, Bidding Document and Tender Drawing. Then by using above mentioned data traffic analysis was done by using SYNCHRO and VISSIM. Then the comparison of results of both softwares in term of average vehicular delays, fuel consumptions and vehicular emissions was done. The payback period of the capital cost of interchange in terms of public benefits by calculating savings due to fuel consumption and vehicular emissions reduction due to conversion of this intersection into interchange was also determined. To mitigate congestion, pollution and accidents problems to the road users during construction of interchange, first of all a stage wise work execution plan is proposed and then traffic management plan for each stage of construction is also proposed. This work is done using AutoCAD. These management plans can be used for future similar projects in order to avoid congestion, pollution and accidents problems which happened during construction of koral interchange. LOS on intersection was F and it is improved to B by construction of the interchange and it will remain B even in 2032. Similarly fuel consumption reduced from 589 gal/hr to 373 gal/hr. Vehicular Emissions (i.e. CO, NOX, VOCs) also reduced to a large extent by conversion of intersection into interchange. The payback period of the capital cost of interchange in terms of public benefits is 3.21 years (3 years and 2.5 months). The construction of KORAL Interchange had been actually executed in two stages due to which there was poor traffic management during construction. In order to manage the traffic efficiently a seven stages work execution plan was proposed.