This study investigates the utilization of existing CCTV networks for road traffic volume measurement, a key indicator of road infrastructure utility. Traditionally, traffic studies, which are costly and time-consuming, are divided into continuous or ad-hoc surveys. By leveraging current CCTV systems, the proposed method eliminates the need for new installations, conserving resources and increasing efficiency. Preliminary results indicate that this approach offers a time and cost-effective alternative for traffic assessments, with the potential to transform traditional survey techniques.

PURPOSES : This study verifies the appropriateness of the observed traffic volume using car navigation traffic volume data. METHODS : In this study, we developed an annual average daily traffic (AADT) estimation model that can verify the total amount of traffic by using navigation traffic volume data. In addition, a method to verify the appropriateness of the observed traffic volume was developed using time-based navigation traffic volume data that can check the characteristics of traffic volume at each point. RESULTS : As a result of the analysis of this study, it was found that 674 of the 697 short-duration survey spots of the freeways were appropriate and that 23 spots needed to be revised. CONCLUSIONS : As a result of the analysis of this study, it was found that there was a strong positive correlation between the observed traffic volume and the car navigation traffic volume. Thus, the appropriateness of the observed traffic was determined by verifying the total amount of observed traffic and the observed traffic volume by time.

The probabilistic prediction method and procedure of ships traffic for reasonably considering the enlargement of ships and increase in the large vessels of the vessel were established in this paper. However the problem related on prediction method, confidence intervals and selecting the target tonnage considering the enlargement of ship for prediction of ships is lack of results such as design example and study case. Therefore it requires various methodological study.

Traffic accidents on the expressways during the high speed driving are severe and more damaging, compared with other traffic accidents. There has been much effort to reduce the traffic accidents by seeking for the cause of the accidents. Apart from drunk driving and driving while drowsy caused by personal carelessness, one of the main causes of the accidents on the expressways is the limit to the straight-ahead. The straight-ahead is much affected by climate and topography. Existing research on this subject investigates the accidents during the driving on the expressways under bad weather, the accidents on the freeways with design problems regarding the topology and grade and the accident frequency varying with traffic volume. The current study suggests a model including precipitation and traffic volume at a time and aims at examining their impacts on the traffic accidents on the expressways by using a binomial logistic regression analysis. The data used were the traffic accident frequency per day over a year on each link of two expressways, Donghae and Yeongdong, which represent Yeongdong and Yeongseo regions of Gangwon Province. The results tell that precipitation and traffic volume significantly affect the occurrence of the traffic accidents. The accident occurrence is also significantly different between the two expressways and even more significantly different between links within each expressway. Further research topics were identified, including the distinction between rainfall and snowfall, the inclusion of mediating variables such as the limit to the straight-ahead due to the precipitation and the differentiation between the degrees of fatality of the traffic accidents.

The purpose of this study was to develop the national park visitor counting system using the ubiquitous sensor network. This system is composed of a sensor node, sink node, gateways, CDMA module, server, and clients. The results of the study were: 1) stable data transmission distance was possible within 100 meters between sensor nodes, 2) the developed counting sensor system showed a network communication stability level of 88.3 percent in 1.2m wide trails. When installed in concentrate use areas or forks of national parks, the visitor counting system will not only contribute to provide reliable visitor counting, but also to improve the quality of national park visitor service, to manage park facilities and natural resources more efficiently, to achieve an information oriented national park system.

부산항 북항은 일제 강점기에 축조된 일반부두(1,2,중앙,3,4)에서 시작하여 자성대, 신선대, 감만 부두 등으로 확장되었다. 그러나 도심과 접한 항만의 입지적 특성으로 인하여 물류 활동 및 도시 활동 양 측면에서 문제가 대두되어 왔다. 장치장 부족으로 인한 부두밖 장치장(ODCY) 확대가 대표적이다. 이것은 물류비용 증가뿐만 아니라 우암로, 충장로 등 주요 간선도로상의 화물 차량 비중을 높이는 결과를 가져와서 심각한 사회 문제가 되고 있다. 본 연구는 일반부두와 자성대부두 재개발로 인한 충장로, 우암로 등 인접 주요 간선도로의 통행량 감소 효과를 분석하고 그동안 차량 통행으로 발생된 교통혼잡으로 인한 사회적 비용의 절감효과를 분석하여 두 부두의 재개발로 인한 효과를 제시하는 데 목적이 있다.

최근의 항만 환경에서는 분리된 선석의 통합이 활발히 진행되고 있으며, 통합의 필요성도 높아지고 있다. 그러므로, 기존의 게이트들의 활용이 컨테이너터미널에서의 차량의 체재시간 감소와 차량 통행량 분산 측면에서 검토되어야 한다. 본 연구는 통합게이트와 분리게이트의 운영효과를 분석하였다. 본 연구는 두개의 개별 선석 통합시 게이트 운영의 효율성이 높은 분리게이트시스템을 제안한다.