Title: ADAPTIVE VIRTUAL TRAFFIC LIGHT BASED ON VANETS FOR MITIGATING CONGESTION IN SMART CITY

Year of Publication: Jul - 2013
Page Numbers: 40-44
Authors: Li-Der Chou, Jin-Hua Tseng, Jyun-Yan Yang
Conference Name: The Third International Conference on Digital Information and Communication Technology and its Applications (DICTAP2013)
- Czech Republic

Abstract:


Fixed cycle traffic lights decrease the throughput of traffic at intersections. Adaptive traffic light approaches dynamically change the cycle of traffic lights according to current traffic, these approaches usually improves traffic. However, it costs many resources to maintain all physical traffic lights in a city, and conventional adaptive traffic light approaches were designed for physical traffic light systems, rather than virtual traffic light (VTL). VTL approaches will be a feasible solution to facilitate energy efficiency in a smart city; therefore, this paper proposes a VTL approach based on vehicular ad-hoc networks (VANETs) in smart city. The proposed approach adapts the cycle of VTL according to current traffic and vehicle type via VANETs. The results show that the proposed approach improves average speed by 10.1%, when compared with fixed cycle traffic lights.