• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.14 no.4
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• pp.80-85
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• 2015

The era of intelligent transportation system(ITS) has been arrived by applying information and communication technology(ICT) to the traffic. One of these technological advances is a wireless communication technology for a high speed vehicle to be connected to an infrastructure(V2I). A variety of road traffic safety services and operator comfort services are being developed by means of WAVE(Wireless Access in a Vehicular Environment) based on IEEE802.11p Standard. In this paper, the link budget is analyzed to provide a reliable quality of these ITS services. Log-distance model and two-ray model is employed for the wave propagation path loss model which is adequate for a highway environment. Reliable cell coverage is suggested for ITS services from the link budget.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.339-340
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• 2018

한국형 e-Navigation 서비스 개발 중 최적 안전항로 지원서비스는 육상에서 연안여객선과 같은 사고취약 선박이나 서비스 요청 선박에 한해 실시간 선박 교통, 해역 환경, 기상 정보 등 해사 안전정보를 활용한 최적의 안전항로를 지원하는 서비스이다. 본 발표에서 현재 개발 중인 선상지원시스템과 육상지원시스템의 개발 내용을 소개하고, 사용자 만족도 조사결과를 소개하고자 한다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.259-260
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• 2022

현대사회에서 인터넷 그리고 스마트폰을 비롯한 각종 모바일기기는 이제 국민 모두가 사용하는 필수품이 되었다. 통신은 의사전달 수단과 단순한 소통의 개념을 넘어서 교통, 문화, 산업 그리고 소셜미디어의 활용 등을 통해서 국민 개개인의 주요한 생활 일부분이 되었다. 또한 정부는 디지털정부 구현을 위해 각종 민원서류 및 정부 업무를 통신망을 통한 원격 서비스로 수행가능할 수 있도록 운영계획을 발표하였다. 이러한 계획이 실현되고 현재 우리가 이용하고 있는 모든 유무선 통신서비스가 안정적으로 구현되기 위해서는 통신망의 안전성 확보가 가장 중요한 핵심적 요소이다. 따라서, 본 연구는 통신 분야 국가핵심기반 영역을 관리하는 주요통신사업자의 통신망과 서비스의 안전성 확보를 위해 기능연속성계획(COOP)수립 방향을 도출하고자 한다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.1
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• pp.51-63
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• 2022

Convoy driving is one of the technologies of multi-vehicle cooperation driving along with platoon driving. All over the world, research on vehicle control mechanisms to maintain vehicle formation during convoy driving convoy driving has been actively conducted and in Europe's Autonet 2030 project has developed and demonstrated convoy driving services for highways. But, even the concept of convoy driving is still insufficient in Korea. Therefore, in this study, the concept of convoy driving service was established and scenarios and communication messages for service application on urban roads were developed. And its effectiveness was verified through simulation analysis. As a result of comparing and analyzing individual vehicle cooperative driving and convoy driving for the blind spot support service and dilemma zone safety support service, which are representative V2I cooperative driving services on urban roads, the number of conflicts(indicator of traffic safety) and delays and stops(indicator of traffic efficiency) are significantly improved in convoy driving compared to individual vehicle cooperative driving.

• Journal of Advanced Navigation Technology
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• v.27 no.6
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• pp.699-709
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• 2023

As the global air traffic volume has shown a rapid increase, doubling every 15 years since 1977, domestic and international air traffic control services and air navigation safety facility operation management system and status review It is necessary to present the feasibility of establishing an air traffic control agency with integrated functions and establish an operating system for an independent dedicated agency to provide advanced air traffic control services in preparation for the future air transport environment. In particular, in 2021, the national ATM reformation and enhancement (NARAE) a customized comprehensive plan for operations, facilities, and systems to handle air traffic safely and efficiently by actively reflecting changes in the navigation environment such as international policies and standards as this is established, the role of the air traffic control agency becomes more important, and an improved action plan for the control and navigation operating system must be promoted.

• Proceedings of the Safety Management and Science Conference
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• 2011.04a
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• pp.289-295
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• 2011

본 연구는 안전체험관 특히 재난 재해 체험시설에 방문한 관람객들의 흥미유발과 적극적인 참여를 유도하기 위하여 도입되는 상호작용 체험 시스템의 설계에 대한 것이다. 설계된 안전 체험 시스템은 첫째, 관람객들에게 개별적으로 제공된 단말기의 체험관 내 위치정보와 체험 기기들의 동작감지센서정보를 기반으로 체험 여부 판단 및 체험 점수를 자동으로 산출하는 증강현실 서비스와 둘째, 체험관 내 긴급 호출 등의 안심 서비스를 제공한다. 설계된 시스템의 구현을 통하여 향후 안전테마파크 외에도 체험시설이 구비된 교통 및 과학 전시관, 체감형 게임센터 등에도 충분히 적용가능하다고 사료된다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.23 no.4
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• pp.54-66
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• 2024

Various new ITS Services to support autonomous vehicles. Infra-guidance service is also one of the new ITS services that have emerged to harmonize the traffic flow in mixed traffic by assisting autonomous vehicles. As a verification procedure to introduce a new ITS service, use cases and scenarios will be established for various spatial and situational ranges that may occur on the road, and limited test operations and living lab pilot operations will be performed. On the other hand, numerous cases occur depending on environmental factors such as the traffic volume at the time of service operation, weather and road geometric characteristics. This study presents a test scenario design method for verifying new ITS services, focusing on the infra-guidance service that is being researched as an emerging autonomous driving-supported technology.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.6
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• pp.266-283
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• 2022

With the rapid development of autonomous vehicle technology, unexpected accidents are occurring. Therefore, it is necessary to minimize user accident damage through the development of autonomous traffic safety education. Since edge cases, accident type, and risk factor analysis are important for realistic education, overseas case studies and demonstrations were carried out, and based on this, two curriculum for service providers and general users were developed. The service provider curriculum consisted of OEDR, sudden stop, cut-in, take-over, defensive driving, system malfunction, policy and information security education, and the general user curriculum consisted of attention duty, take-over, operating design domain, accidents type, laws, functions, information security education.

• Journal of the Korean Society of Marine Environment & Safety
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• v.19 no.2
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• pp.171-178
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• 2013

This paper presents the Part 1 of the Questionnaire Survey on Marine Safety and VTS in the Philippine Coastal Waters. This part deals with respondents profiles; experiences onboard and ashore; familiar areas; and their subjective perception of marine risks- by factors and by areas. The subjects are chosen from different regions nationwide with connection and/or with maritime background. There are 202 responses returned and these are put into a database for analysis made through Excel programs and statistics references. The result of the nationwide responses show that 97 % of respondents have shipboard experiences onboard of different ships' types and sizes; and 88 % are directly involved in the navigation of ships. Risk Perception levels - by factors and by familiar areas - show a higher risk degree in the 3rd level ('Sometimes Increases Risks') and 4th level ('Often Increases Risk') in each respondents' response indices. The study finds that the most risky factor is the "Violation of Rules and Regulations" which has a high risk at 5th level (Very Often Increases Risk), and for the over-all familiar areas, the Manila Bay area (NCR region) garners the most risky perception, also, at the 5th level. It is, therefore, recommended by this paper to conduct a comprehensive review of the rules and regulations viable in each locality; strengthening the maritime traffic systems, structures and educating the stake-holders specifically in Manila Bay area and other busy waterways of the country. The ultimate goal of this paper is to gather information, analyze these data and develop a set of tools and techniques to be utilized as a guide in the improvement and development of maritime traffic safety in the country.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.344-346
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• 2022

최근 자율운항기술개발이 활발하게 이루어짐에 따라 자율운항선 실증이 증가하고 있으며, 또한 자율운항선의 효율적 운용 특히 운항의 안전성을 위해 입출항 시기의 적절성 또한 중요해지고 있다. 이에 해상교통혼잡도를 예측하고자 하였고, AIS 빅데이터를 통해 선박별항적을 분석 및 분류하고자 하였다. 장기적 관점에서 PORT-MIS 선박입출항현황 데이터(호출번호, 입항일시, 출항일시, 전출항지, 차항지, 계선지)를 과거 AIS 빅데이터와 연결시켜 과거 항적 중 가장 가까운 항적을 찾고자 하였다. 그리고 당시 소요 시간을 반영하여 12개의 시간대별로 어느 시점에 어느 위치 구간에 선박들이 놓이게 될지 예측하였고, 특히 입출항 시기의 적절성에 핵심이 되는 13개로 모델링된 영역에 몇 개의 선박들이 항로를 지나는지에 따라 혼잡도(원활, 혼잡, 정체)를 구분하였다. 또한, 본 연구에서는 단기적 관점에서 실제 AIS가 수신된 후에도 유사한 항적을 검사해가며 혼잡도를 예측하고자 하였고, 이러한 장단기적 혼잡도 예측을 통해 미래 자율운항선입출항 지원 서비스의 안전과 그 적절성을 제공하고자 하였다.