Development of Vehicle Tracking System using Digital VCR and Its Application to Traffic Conflict Analysis

Abstract

This paper presents the Vehicle Tracking System using a digital VCR and its application to the conflict analysis at the many accidents occurrence point for developing ITS-assist traffic safety system. First, the outline of the proposed vehicle tracking system is described. Second, its application to the actual traffic conflict analysis using conventional conflict indicators as TTC, PET, and etc. at the intersection traffic flow. Since the vehicle tracking system is very accurate, every location of target vehicle can be identified accurately. Thus the conflict indicators are highly reliable ones. The characteristics of these conflictindicators such as TTC, PET, and others are discussed. Then based on these discussions, the requirements for desired conflict indicators for truly appropriate and effective alert for drivers are discussed for ITS-assist safety system.