Bara’h  Al-Mashaikh, Mohammad  Abojaradeh, Mahmoud  Al-Battah, 
    Evaluation of the Performance of using Different Unconventional Intersections at Highly
Congested Intersections. Case Study: Amman/Jordan,
    Journal of Engineering and Applied Sciences,
    Volume 15,Issue 19,
    2020,
    Pages 3374-3384,
    ISSN 1816-949x,
    jeasci.2020.3374.3384,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2020.3374.3384)
    Abstract: The main purpose in this study is to attempt to
improve the operational performance of highly congested
urban arterial intersections by using Unconventional
Arterial Intersection Designs (UAIDs) as a solution of
congestion intersections. Also, to make comparison
between the operational performance of the current
situation and the proposed unconventional solutions. In
this study signal timing optimization was used as an initial
solution before doing any modification on the geometric
design. Then, testing the effect of implementing some
types of UAIDs including single quadrant, jug-handle,
bowtie and Continuous Green T-Intersection (CGTI) as
suggested solutions for three highly congested urban
arterial intersections in Amman, Jordan. By using
microscopic simulation software, Synchro studio 9 with
Sim Traffic and using a real traffic data for each
intersection. For the purpose of this study the selected
intersections were two of four-legged intersection type;
Alaqsa Intersection and Ebad Alrahman Intersection and
one of three-legged intersection type; Abu Hdeeb
Intersection where all of them are complicated
intersections. The analysis revealed that the proposed
UAIDs succeeded in improving the current intersections
where the Level of Service (LOS) improved to be C using
Single Quadrant and B using Jug-handle at Alaqsa
Intersection, LOS B using Bow-tie at Ebad Alrahman
Intersection and LOS D using Continuous Green
T-intersection at Abu Hdeeb Intersection.
    Keywords: Bowtie intersection;continuous green T-intersection;Jug-Handle intersection;measurement of effectiveness;Micro-simulation;single quadrant roadway;traffic operational performance;unconventional
intersections