• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.4 no.1 s.6
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• pp.43-56
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• 2005

This research has examined a time series analysis(TSA) of an every hour traffic information such as occupancy, a traffic flow, and a speed, a statistical model of a surveyed data on the traffic fundamental diagram and an expand aspect of a traffic jam by many Parts of the traffic flow. Based on the detected data from traffic accidents on the Cheonan-Nonsan high way and events when the road volume decreases dramatically like traffic accidents it can be estimated from the change of occupancy right after accidents. When it comes to a traffic jam like events the changing gap of the occupancy and the mean speed is gentle, in addition to a quickness and an accuracy of a detection by the time series analyse of simple traffic index is weak. When it is a stable flow a relationship between the occupancy and a flow is a linear, which explain a very high reliability. In contrast, a platoon form presented by a wide deviation about an ideal speed of drivers is difficult to express by a statical model in a relationship between the speed and occupancy, In this case the speed drops shifty at 6$\~$8$\%$ occupancy. In case of an unstable flow, it is difficult to adopt a statistical model because the formation-clearance Process of a traffic jam is analyzed in each parts. Taken the formation-clearance process of a traffic jam by 2 parts division into consideration the flow having an accident is transferred to a stopped flow and the occupancy increases dramatically. When the flow recovers from a sloped flow to a free flow the occupancy which has increased dramatically decrease gradually and then traffic flow increases according as the result analyzed traffic flow by the multi regime as time series. When it is on the traffic jam the traffic flow transfers from an impeded free flow to a congested flow and then a jammed flow which is complicated more than on the accidents and the gap of traffic volume in each traffic conditions about a same occupancy is generated huge. This research presents a need of a multi-regime division when analyzing a traffic flow and for the future it needs a fixed quantity division and model about each traffic regimes.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2003.05a
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• pp.378-383
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• 2003

현재 소규모 공장, 빌딩 등 대부분의 수용가에서 사용하고 있는 22.9kV 수ㆍ변전설비에서 발생한 감전사고의 최근 3년간('97∼'99년) 통계를 살펴보면, 매년 100여명의 감전재해자가 발생하였고, 이는 전체 감전사고의 11.3%를 차지하고 있어 타 설비에 비해 감전사고 점유율이 높음을 알 수 있다. 이들 사고원인을 분석하였을 때 대부분 COS 2차 모선과 변압기간의 충전부에서 84.4%가 발생한 것으로 나타났다.(중략)

• Journal of Korean Society of Transportation
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• v.21 no.2
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• pp.45-60
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• 2003

A median is a safety feature most commonly used to separate opposing traffic on a divided highway. In designing highways, the selection and installation of a median can be a critical part from a safety viewpoint because road crossing accidents are definitely more serious than other accidents. In regard to the important function of the median. the proper countermeasure ought to have been provided and thorough study should have been carried out. In this paper, traffic accident data are analyzed to examine the accident reduction effect of the median, which are gathered from all over 4-lane national roads in Korea. The traffic accident data were categorized into two groups by the existence of a median. For more effective analysis, the data have been classified by accident type, severity. and occurrence time. To compare the effectiveness of median installation, not only the accident frequency but also the accident severity, EPDO. and the occupancy rate of specific accidents have been used as a mode of effectiveness. The analysis of the effectiveness of medians shows that both the accident frequency and the accident severity could decrease by providing a median. Also the section where a median was supplied showed the improvement of overall safety through fewer serious and fatal crashes as well as fewer head-on crashes. Therefore, conclusions can be drawn from results of this study that the median installation is an important means to increase the safety of over 4-lane national roads. This study is expected to provide the reasonability of the median installation by identifying the reduction of traffic accident after the median installation and to play a major role in selecting sections where the median is to be offered.

• Proceedings of the KOR-KST Conference
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• 1996.02a
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• pp.87-114
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• 1996

심각한 노인교통사고를 줄이기 위하여 가장 높은 점유율을 보이는 노인보행자의 횡단사고 유형, 특성 및 사고원인을 분석했다. 횡단사고의 약 60%가 횡단보도 및 그 부근에서 발생했고, 70%이상이 노인여성이었으며, 절반정도가 야간에 발생했고 피해정도는 치사율이 12%, 부상은 평균 6주의 중상이었다. 사고원인은 특히 횡단보도 및 그 부근에서의 운전미확인이 가장 많았고, 노인보행자측의 원인은 고의위반 또는 법의 부지가 가장 많았다. 노인보행자의 횡단사고를 줄이기 위해서 운전자에게 횡단보도 정지선 엄수, 횡단보도 부근뿐 아니라 생활도로 및 상업지역 도로에서의 철저한 안전확인 등의 교육, 홍보, 훈련이 필요하다. 노인보행자를 위한 훈련프로그램은 성별로는 특히 노인여성에게 집중적 훈련이 요구되며, 훈련내용으로는 야간횡단의 위험성 인식 및 반사재 부착, 안전한 횡단장소 선택 및 횡단절차의 훈련, 상대방은 운전자와의 의사소통 훈련 등이 중점적으로 개발되어야 한다.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2003.10a
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• pp.231-236
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• 2003

산업의 형태가 고도화되고 다양해짐에 따라 유통활동의 영역이 넓어지고 수송 수요가 증가하고 있다. 또한 소득수준의 향상에 따라 자가용 승용차의 보유 및 이용이 급속도로 증가하고 있으며, 이로 인하여 도로교통소음, 대기오염, 교통사고 및 도로공간점유 등 많은 문제를 야기 시키고 있다. 특히 자동차 보유대수는 증가하나 낮은 도로 점유율 때문에 도로교통소음이 해마다 증가하고 있다.(중략)

• KIPS Transactions on Software and Data Engineering
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• v.4 no.2
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• pp.83-90
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• 2015

Almost of current Automatic Incident Detection(AID) algorithms involve the vulnerability that detects the traffic accident in open road or in tunnel as the traffic jam not as the traffic accident. This paper proposes the improved accident detection algorithm to enhance the detection probability based on accident detection algorithms applied in open roads. The improved accident detection algorithm provides the preliminary judgment of potential accident by detecting the stopped object by Gaussian Mixture Model. Afterwards, it measures the detection area is divided into blocks so that the occupancy rate can be determined for each block. All experimental results of applying the new algorithm on a real incident was detected image without error.

• The Safety technology
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• no.204
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• pp.26-28
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• 2014

충남 논산에 위치한 (주)우성양행은 동물용의약품 분야에서 탑티어에 속하는 기업이다. 모기업인 우성사료와는 축산업분야에서 동반자적 관계를 유지하면서 높은 성장도 이뤄냈다. 우성양행에서 생산관리를 총괄하는 나기선 상무이사는 "동물의약품 분야에서 매출액 기준 10위권인 우성양행은 첨가제, 의약품 쪽으로는 3위권이고, 팜세이프, 농장 소독 등 농장 청결제 분야에서는 선도를 달리고 있다"고 밝혔다. 단순히 시장점유율만 높은 것이 아니다. 철저한 제조과정 속에 6년 동안 단 한차례의 사고도 발생하지 않았고 농림축산검역본부의 GMP(동물용의약품 등 제조 검사시설 및 품질관리기준)를 준수하며 적합한 제품을 생산해 오고 있다. 동물의약품 제조분에서 시장점유율, 안전분야 모두 선두에 서 있는 우성양행이 어떠한 안전관리와 경영활동을 펼치고 있는 이야기를 들어봤다.

• Journal of Korean Society of Transportation
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• v.24 no.2 s.88
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• pp.127-137
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• 2006

This Paper Presents a novel incident detection method for using the speed-density difference between detectors. When a incident is happened the downstream traffic condition is mostly lower speed and higher density and the upstream is higher speed and lower density In respect of such characteristics, we can suggest a method for detecting an incident based on the speed-density information provided from detectors. The incident detection method is tested by using the accident data collected from the Cheonan-Nonsan Highway. The results show that suck an incident detection method can analyze the position of accident by comparing the speed-density difference between detectors. The work described in this paper is only at on early stage, in the sense that there are several areas to be further investigated in application of this method. such as setting a critical value for judging the incident. a level of accident wave, a varying Pattern between the incident locations and detectors, etc.

• Journal of Internet of Things and Convergence
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• v.8 no.1
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• pp.65-72
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• 2022

The Internet of Things (IoT) provides data convergence and sharing functions, and IoT technology is the most fundamental core technology in creating new services by convergence of various cutting-edge technologies. However, there are different classification systems for the Internet of Things, and when it is limited to the domestic public sector, it is difficult to properly grasp the current status of which devices are installed and operated with what share, and systematic data or research The results are very difficult to find. Therefore, in this study, the relevance of the classification system for IoT devices was analyzed according to reality based on sales, shipments, and growth rate, and based on this, the actual share of IoT devices among domestic public institutions was analyzed in detail. The derived detailed analysis results are expected to be efficiently utilized in the process of selecting IoT devices for research and analysis to advance information protection technology such as responding to malicious code attacks on IoT devices, analyzing incidents, and strengthening security vulnerabilities.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.38 no.2
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• pp.303-310
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• 2018

One of most shocking headlines is a serious chain collision accident (CCA). The development of CCA has a temporal and spatial locality, and the information of the CCA is time-critical. Due to these characteristics of CCA, traffic accident information should be rapidly propagated to drivers in order to reduce chain collisions, right after the first accident occurs. Inter-vehicle communication (IVC) based on ad-hoc communication is one of promising alternatives for locally urgent information propagation. Despite this potential of IVC, research for the effects of IVC on the reduction of CCA has not been reported so far. Therefore, this study develops the parallel platform of microscopic vehicle and IVC communication simulators and then analyses the effects of IVC on the reduction of the second collision related to a series of vehicles. To demonstrate the potential of the IVC-based propagation of urgent traffic accident information for the reduction of CCA, the reduction of approaching-vehicle speed, the propagation speed of accident information, and then the reduction of CCA were analysed, respectively, according to scenarios of combination of market rates and traffic volumes. The analysis results showed that CCA can be effectively reduced to 40~60% and 80~82% at the penetration rates of 10% and 50%, respectively.