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The Journal of The Korea Institute of Intelligent Transport Systems Vol.1 No.1 pp.22-32
비매설식 자동차량인식장치를 이용한 구간교통정보 산출 방법 연구
Regional Traffic Information Acquisition by Non-intrusive Automatic Vehicle Identification
Abstract
This paper describes about non-burial AVI (Automatic Vehicle Identification) system using general vehicle as probe car for obtaining more accurate traffic information while conserving road pavement surface. Existing spot traffic detectors have their own limits of not obtaining right information owing to its mathematical method. Burial AVI systems have some defects, causing traffic jam, needing much maintenance cost because of frequent cutting of loop and piezo-electric sensors. Especially, they have hard time to make right detection, when it comes to jamming time. Therefore, in this paper, we propose non-burial AVI system with laser trigger unit. Proposed non-burial AVI system is developed to obtain regional traffic information from normal Passing vehicle by automatic license number recognition technology. We have adapted it to national highway section between Suwon city and PyongTaek city(9.5km) and get affirmative results. Vehicle detection rate of laser trigger unit is more than 95%, vehicle recognition rate is 87.8% and vehicle matching rate is about 14.3%. So we regard these as satisfying results to use the system for traffic information service. We evaluate proposed AVI system by regulation of some institutions which are using similar AVI system and the proposed system satisfies all conditions. For future study, we have plan of detailed research about proper lane number from all of the target lanes, optimal section length, information service period, and data fusion method for existing spot detector
