CONTROL OF TRAFFIC LIGHT USING FUZZY LOGIC AND HARMONY SEARCH ALOGARITM

Abstract

Traffic light controller holds an important role in maximizing traffic flow. However, normal traffic light controller with fixed phase duration is ineffective to handle traffic with variable density. Therefore, this paper proposes a fuzzy logic controller to improve the flexibility of traffic light controller in handling variable traffic density. Furthermore, the fuzzy logic controller is optimized using Harmony Search algorithm. The proposed fuzzy logic controller is marked by its capability to decide which lane will have green phase. Also, it is capable to extend and terminate a green phase or a red phase. An observation on an intersection at Bekasi, the fifth largest city in Indonesia, is done to provide a real case simulation for comparing the proposed fuzzy logic controller and the existing controller. The simulation shows that the optimized fuzzy logic controller outperforms the existing fixed-duration controller.