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The Effectiveness of Applying Dynamic Lane Assignment at All Approaches of Signalized Intersection

l The Effectiveness of Applying Dynamic Lane Assignment at All Approaches of Signalized Intersection. Masters thesis, King Fahd University of Petroleum and Minerals.

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Arabic Abstract

يتأثر اداء الاشارات المرورية على التقاطعات بشكل ملحوظ باختلاف اتجاه الحركات خلال اليوم وزيادة هذا الاختلاف يؤدي الى تأخير السيارات مما يتسبب بحدوث ازدحامات مرورية خانقة وبالتالي يؤدي الى زيادة التلوث الناجم من انبعاثات عوادم السيارات. تتلخص هذه الدراسة في تطبيق الية جديدة بحيث تجعل استخدام امثل للاشارة الضوئية وذلك من خلال تغيرها ديناميكيا لتوفر السعة المطلوبة لكل حركة من الحركات (الاتجاه نحو اليسار, اماما , نحو اليمين). اظهرت نتائج الدراسة التأثير الايجابي الملحوظ في تطبيق الالية الجديدة عوضا عن استخدام الالية القديمة (التحديد المسبق لاتجاهات المسارب خلال التقاطع ). إن تطبيق هذه الالية يؤدي الى تقليل التأخير وبالتالي تقليل التلوث والحصول على افضل طول اشارة ضوئية لذلك التقاطع بحيث يخدم اي اختلاف في اتجاه الحركات المرورية خلال التقاطع مما يزيد كفاءة الاشارة الضوئية.  

English Abstract

Intersection performance is affected by the spatial variations in the traffic demand. Existing traffic control strategies at signalized intersection assume a fixed movement per lane (lane group) for each approach. However, it is observed that some intersection, especially in urban areas, have a significant variations in traffic demand among different movements of the same approach (LT, TH, RT). Under this condition, adopting a fixed lane group strategy will result in the waste of time-space resources. One of the applications of Intelligent Transportation Systems (ITS) solution at isolated intersections is to apply Dynamic Lane Grouping (DLG) in order to improve their mobility performance. The main objective of this research is to evaluate the effectiveness of applying DLG in identifying the optimal Lane Group Combination (LGC) and optimized signal timing at isolated signalized intersection based on minimum intersection delay criterion. It was concluded that applying DLG along with signal optimizing can enhance the performance of the signalized intersection by reducing the intersection delay which leads to reduce the queue length and the amount of fuel consumption and emissions. Furthermore, applying DLG for all approaches resulted in a significant reduction in cycle length and the associated intersection delay.



Item Type:Thesis (Masters)
Subjects:Civil Engineering > Transportation Engineering
Divisions:College Of Engineering Sciences > Civil Engineering Dept
Committee Advisor:Al-Hajyaseen, Wael
Committee Members:Ratrout, Nedal and Al-Ofi, Khalaf
ID Code:139576
Deposited By:MUATH MARWAN NAJJAR (g201305690)
Deposited On:07 Jun 2015 12:03
Last Modified:07 Jun 2015 12:03

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