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Cities in Jordan, especially the capital, Amman, are witnessing traffic jams due to the increase in the number of cars and the increase in population (whether it is a natural increase or an increase due to successive migrations from the neighboring countries). This study aims to evaluate and improve the level of service (LOS) and delay of the Elba-house intersection in Amman city, Jordan. The required data were collected from the governorate traffic departments and also directly from the field. The intersection was evaluated using SIDRA INTERSECTION 5.1 software. The results show that the level of service is F, and the intersection is crowded with a total delay time of about 285.8 seconds. A tunnel in addition to a roundabout was proposed to decrease the average delay and increase its level of service. The reanalysis of the intersection provided good results whereas the level of service can be increased to B and the average delay reduced to 13.3 seconds.

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