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Improvement of Traffic Operation in Congested Signalized Intersections in Baghdad City | ||
| Journal of Engineering and Sustainable Development | ||
| Article 1, Volume 12, Issue 3, 2008, Pages 8-24 | ||
| Author | ||
| Estabraq Nashat Ezat | ||
| 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.The results of this study revealed the selected traffic facility currently undergoes serious degradation causing breakdown conditions. Thus, urgent considerations must be given regarding the upgrading in the LOS by suggesting many alternatives. It is found that the best suitable one which is recommended to be executed, is to construct a flyover that connects Maysaloon square with AlBayda'a square towards Dorah expressway by consider the proposed geometrical design and the required number of lanes.8 | ||
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