Improvement of Traffic Operation in Congested Signalized Intersections in Baghdad City

Abstract

Intersections are usually considered as the critical points within the network and the evaluation of their performance provides valuable understanding and useful indication about the performance of the system. The capacity of signalized intersection is of more significant because such intersections often control the ability of the city streets to accommodate traffic. In Baghdad, most of the signalized intersections are congested and operate in LOS E or F. Accordingly, the objective of the present study is to improve the performance operation of two signalized intersections by investigating the proper alternatives to enhance the traffic capacity of the mentioned facilities. To achieve this objective, Maysaloon and AlBayda'a signalized intersection in Baghdad city were selected. Both of them are located in an area of heavy traffic volume since there are many attraction locations close to the study area.
The required data was collected manually by special team using the necessary survey equipment suitable for the study purpose. The analysis and evaluation throughout the study are performed by using Highway Capacity Software (HCS2000) program package, in order to identify the level of service for the studied intersections.