Browsing by Author "zuleha Jemal"

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    Assessing the Socio-Economic Impact of Traffic Congestion in Addis Ababa (Case Study: welete to Total)
    (Addis Ababa University, 2022-02) zuleha Jemal; Bikila Teklu (PhD)
    Addis Ababa is the cities which is undergoing in a fast urbanization and facing traffic congestion in significant manner. It has both social and economical implication on the peoples of the country. The socio-economic impact of traffic congestion comes in many forms, such as increase stress and fatigue, constraint social relation, increase accident and incident, increase transport cost, difficulty to estimate travel time, missing appointment and late delivery, block for emergency vehicles, diversion to the local road, and health problem. This study assesses the socio-economic impact of road traffic congestion in Addis Ababa city in case of Welete-Total road segment. Primary data collected using questionnaires and filed visit. The data collect from questionnaires analyze using Statistical Package for Social Sciences (SPSS) software to assess the cause, impact and solution of traffic congestion at study area. And the data collected from field visit of the three major intersections at the road segment was used for Traffic volume and Spot Speed analysis using Excel spread sheet. And performance Analysis of the intersections was done by considering delay, queue and LOS using VISSIM 9 software. The level of service result of Ayertena signalized intersection, Zenebework Roundabout and Total Turbo Roundabout is LOS-F, LOS-B and LOS-D respectively. The estimated Total congestion cost of the all three intersections based on delay cost and change in vehicle operating cost at morning peak hour is 879,968.45 ETB. To enhance performance of Total 3kutr mazoriya Turbo Roundabout, this study proposed engineering solutions is signalizing the roundabout by maintaining its current geometry as it is. Signal timing design and approaching saturation flow rate were computed by using HCM 2010 and coded in vissim software to do performance analysis. The result showed significant reduction of delay from 72.59 seconds to 17.84 seconds and increase Level of service of the roundabout from LOS-D to LOS-B.