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http://dx.doi.org/10.17662/ksdim.2022.18.4.023

Dynamic Traffic Light Control Scheme Based on VANET to Support Smooth Traffic Flow at Intersections  

Cha, Si-Ho (청운대학교 멀티미디어학과)
Lee, Jongeon (LG 유플러스)
Ryu, Minwoo (현대자동차 자동차부분 연구개발본부)
Publication Information
Journal of Korea Society of Digital Industry and Information Management / v.18, no.4, 2022 , pp. 23-30 More about this Journal
Abstract
Recently, traffic congestion and environmental pollution have occurred due to population concentration and vehicle increase in large cities. Various studies are being conducted to solve these problems. Most of the traffic congestion in cities is caused by traffic signals at intersections. This paper proposes a dynamic traffic light control (DTLC) scheme to support safe vehicle operation and smooth traffic flow using real-time traffic information based on VANET. DTLC receives instantaneous speed and directional information of each vehicle through road side units (RSUs) to obtain the density and average speed of vehicles for each direction. RSUs deliver this information to traffic light controllers (TLCs), which utilize it to dynamically control traffic lights at intersections. To demonstrate the validity of DTLC, simulations were performed on average driving speed and average waiting time using the ns-2 simulator. Simulation results show that DTLC can provide smooth traffic flow by increasing average driving speed at dense intersections and reducing average waiting time.
Keywords
VANET; Vehicular Ad hoc Network; Traffic Light Control; ITS; Intelligent Transportation System;
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