Improving Traffic Flow in Emerging Cities: A SIDRA Intersection Based Traffic Signal Design
Authors
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Oyetunde Oluwafemi Adeleke
Affiliation
Department of Civil Engineering, Faculty of Engineering and Technology, University of Ilorin, 240102 Ilorin, P. O. B. 1515, Nigeria
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Daniel Oluwafemi Oguntayo
AffiliationCivil Engineering Department, College of Science and Engineering, Landmark University, 251103 Omu-Aran, P. O. B. 1001, Nigeria
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Iyunade Tiwalade Ayobami
Affiliation
Department of Civil Engineering, Faculty of Engineering and Technology, University of Ilorin, 240102 Ilorin, P. O. B. 1515, Nigeria
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Gabriel Ayobami Ogunkunbi
Affiliation
Department of Transport Technology and Economics, Faculty of Transportation Engineering and Vehicle Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
Abstract
Intersections in urban centers, especially those without any form of signalization, are accident hotspots. This, therefore, calls for ef-
fective and efficient traffic management at the intersections for improved safety and efficient traffic flow. This study aimed to improve traffic flow at the Gaa-Akanbi intersection in Ilorin, Nigeria, using a traffic signal scheme. A traffic volume study and geometric features survey was carried out at the intersection. The traffic volume study was performed to determine the number, movement, and classification of vehicles at this intersection using the manual method of traffic count, while the geometric survey of the intersection was done using tape and Total Station. A 3-phase traffic signal was proposed. The optimum cycle length and signal setting were determined using SIDRA Intersection software by adopting the maximum average passenger car unit on the intersection and targeted level of service (LOS) "D". A traffic signal plan with a cycle length of 150 seconds was designed for the intersection. The amber time was considered to be 2 seconds for all phases, and green time of 48, 46 and 38 seconds was gotten for phases 1, 2 and 3, respectively; this timing ensures that minimum delay occurs at the intersection. The proposed traffic signal should be adopted at the intersection by the metropolitan traffic management agency to improve traffic management.
