A Route Discovery Method for Alleviating Traffic Congestion Based on VANETs in Urban Transportations Considering a Relation between Vehicle Density and Average Velocity

Traffic congestion frequently occurs at main roads in Japan. Traffic congestion causes economic loss and makes energy efficient worse. Therefore untying traffic congestion is required. In Japan, vehicle information and communication system (VICS) is famous for a congestion avoidance system. However, VICS depends on infrastructures. On the other hand, vehicle ad hoc networks (VANETs) are independent from such infrastructures. In this paper, we propose a route discover method for alleviating traffic congestions. Since growing traffic congestions makes trip time long, the proposed method provides a driving route whose trip time becomes short. Also we show results of the simulation experiments in this paper.