PURPOSES : In link matching using vehicular trajectory in a car navigation system, it is technically difficult to match the location of the subject vehicle with a link on an electronic map in the vehicle on a grade separation highway segment consisting of an elevated highway and atgrade highway, because of the overlap of geometric lines of the two highways. This study was initiated to propose a link matching algorithm using the characteristics of vehicular movement of the subject vehicle.
METHODS : The selected test site is the highway segment between Jeong-reung IC and Gil-eum IC where the Inner Circulation Road and Jeong-reung-ro run together. To evaluate the proposed algorithm, this study collected the raw packet data of vehicles that drove on the test site. In a simulation environment, link matching was performed using an existing algorithm as well as the proposed algorithm.
RESULTS: It was clearly found that the characteristics of vehicular movements are different on the two highways.
CONCLUSIONS: The proposed algorithm outperformed the existing algorithm.

• 이세환(웨이브엠 교통정보팀 차장) | Lee, Se-Hwan
• 이철기(아주대학교 공과대학 교통시스템공학과 교수) | Lee, Choul-Ki 교신저자
• 윤일수(아주대학교 공과대학 교통시스템공학과 부교수) | Yun, Ilsoo
• 김남선(국립경찰대학 치안정책연구소 책임연구관) | Kim, Nam-Sun
• 강다미(아주대학교 건설교통공학과 박사과정) | Kang, Da-Mi