• Proceedings of the KOR-KST Conference
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• 1998.10a
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• pp.467-476
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• 1998

우리 나라에서 사용되고 있는 경량전철의 의미는 특정 대중교통수단을 지칭하기보다는 좀 더 폭넓은 의미로서 기존 지하철 또는 전철과 같이 대용량보다는 적으나, 도시버스나 직행버스와 같이 기존의 우리 나라에서 흔히 볼 수 있는 교통수단보다 용량이 큰 대중교통수단을 의미한다. 본 글에서는 각종 경량전철시스템들의 국내 적용 시 고려되어야 할 측면들을 분석한다. 수송용량, 비용, 운영, 시설, 이용자 측면에서 경량전철의 국내 적용가능성을 검토해 보고 현재 우리 나라에서 추진되고 있는 경량전철계획중 주요 문제점과 대처방안을 논한다. 현재 정부의 재원조달방안으로는 경량전철사업의 추진은 매우 어려울 것으로 보인다. 이들 타개하기 위해서는 먼저 중앙정부의 과감한 보조가 선행되어야 한다. 선진국과 같이 초기투자비에서 자기자본비율을 줄일 수 있도록 중앙정부와 해당지방자치단체에서 총 공사비의 최소 50% 이상을 지원하여야 한다. 외국에서의 운영사례와 시스템 평가경험에서 보더라도 기존 이국에서 운행되고 있는 대부분의 경량전철시스템들이 국내에서 요구하는 수송용량 등의 기본 요구사항을 만족할 수 있을 것으로 판단된다. 따라서 시스템의 선정은 시스템의 가격, 유지보수시의 국내기술적용 정도 및 국산화 등 협상시의 계약조건이 시스템이 결정에 중요한 요인이 될 것으로 보인다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.06a
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• pp.195-201
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• 2008

본 연구에서는 고속도로와 같은 연속류 에서의 통행시간 군집화 현상을 연구하여 신뢰성 있는 단위 시간 당 구간 대표 통행시간을 구하는 전처리 방법을 제시하는데 목적이 있다. 현재까지는 단위시간 당 구간의 통행시간 대푯값으로 하나의 평균값(Mean), 최빈값(Mode), 또는 중앙값(Median)이 사용되었다. 이의 문제점은 운전자의 주행 습관(빠른 주행, 느린 주행), 휴게소 이용, 도로 정체 등 다양한 요인으로 인하여 차량일 구간 주행 속도 간 편차가 많아 현재 사용하는 1개의 대푯값으로는 전체 차량의 운행 특징을 정확히 표현하기가 곤란하다는 점이다. 이를 개선하기 위하여 본 연구에서는 군집 방법을 이용하여 차량군을 복수의 비슷한 군집으로 나누고 나누어진 그룹별로 통행시간 대푯값을 선정하는 방법을 제시하고 실험하여 이 방법이 효과적임을 증명하였다.

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.189-199
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• 2002

영동선 이설사업 일환으로 영동선 동백산역(강원도 태백시 연화동)과 도계역(삼척시 도계읍)간의 본 터널은 총 연장 16.4km인 장대터널로서 전북 완주 전라선 슬치터널(6.12km)보다 10km 이상 길고, 정선 고한과 태백 추전을 잇는 4.5km의 정암터널의 3배가 넘는다. 특히 이 터널은 구간의 높이 차(약 3백80m)를 극복하기 위해 Loop형태로 설계되었고, 열차의 안정성, 구난대피, 환기측면에서 단선병렬 터널로 설계되었다. 또한 불량한 선형과 노후된 터널구조물로 인한 열차 안전운행 저해요인을 해소하기 위해 천공발파공법을 굴착공법으로 채택하였다. (중략)

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1046-1052
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• 2006

Railway works on or near the line, or trackside works, typically have high potential of accidents, as the works have to be frequently performed during the train operation. In order to reduce the risks associated with the railway trackside works effectively, a systematic risk assessment must be performed considering the hazards that contribute to the accidents. In this study, hazards are identified for railway trackside works by analysing data from Korea Railroad for accidents that have occurred between the year of 2000 and 2006. The hazard list produced in this study is expected to be effectively used for the risk assessment of the trackside works.

• Journal of Korean Society of Transportation
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• v.20 no.7
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• pp.205-211
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• 2002

본고에서는 최근 논의되고 있는 ATP 도입의 필요성 및 시스템 선정의 적절성을 검토하는데 있어서 철도신호 분야 뿐만이 아닌 우리의 환경변화 여건 등을 종합적으로 고려하여 철도의 장기 발전전략에 부합하는 APT 도입 방안을 제시하였다. ATP 도입시 고려해야 할 주요 환경변화로는 고속철도개통, 기존철도시스템과의 조화와 관련한 기술발전 측면, 틸팅차량 등 기존선 속도향상, 전철화, 복선화 등 철도영업거리 확장 및 남북철도연결 등을 고려해야 할 것이다. 즉, 바람직한 차상신호장치 도입을 위해서는 차량과의 적합성에 있어서는 기존차량, 특히 속도계장치와의 호환성, 시설분야에 있어서는 설치작업 및 향후 유지보수의 용이성과 국산화 가능성, 향후 남북철도 연결과 고속 철도의 기존선 연계운행 등을 종합적으로 고려하고 장기적인 철도발전에 도움이 되는 방향으로 추진되어야 할 것이다. 결론적으로, 우리철도의 기반시설과 차량 등의 현황과 향후 변동요인을 반영하여 가장 바람직한 ATP 표준기준을 용역 등을 통해 설정하고, 업체선정, 적어도 1년 정도의 시험기간을 거쳐 실용화 단계로 접근해야 할 것이다.

• Journal of Korean Society of Transportation
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• v.30 no.2
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• pp.67-78
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• 2012

The current traffic regulations in Korea stipulate that traffic should keep to the right according to the Road Traffic Act; thus, customarily, the 'seat-on-the-left' system has been maintained. However, an increased number of 'seat-on-the-right' vehicles are being imported via a variety of routes from foreign countries, especially from Japan. According to the data from July 2004, 1,343 cargo vehicles and 593 passenger vehicles (for diplomats, etc.) were currently being driven on domestic road. As these 'seat-on-the-right' vehicles are not compatible with the domestic transportation system of driving on the right side of the road, there is a high risk of accidents. Experiments show that such system-driver mismatch causes longer operation time for directional signals, higher error frequency in yielding due to additional mental adjustments for 'seat-on-the-right' vehicle drivers. These are, therefore, influential factors which can lead to possible accidents. Furthermore, when the experiments test the visual range during overtaking maneuvers, the visual range of the drivers in the 'seat-on-the-left' vehicle was 2.95 meters as opposed to 1.7 meters for the drivers in the 'seat-on-the-right' vehicle. (In the experiment, the drivers were instructed to look at the paper cup 10 meters away from the back of drivers' seat.) The results demonstrate that it is necessary to have additional safety measures be implemented for the 'seat-on-the-right' vehicles.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.2
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• pp.62-73
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• 2022

As the competition among the autonomous vehicle (AV, here after) developers are getting fierce, Korean government has been supporting developers by deregulating safety standards and providing financial subsidies. Recently, some OEMs announced their plans to market Lv3 and Lv4 automated driving systems. However, these market changes raised concern among public road management sectors for monitoring road conditions and alleviating hazardous conditions for AVs and human drivers. In this regards, the authors proposed a methodology for monitoring road infrastructure to identify hazardous factors for AVs and categorizing the hazards based on their level of impact. To evaluate the degrees of the harm on AVs, the authors suggested a methodology for managing road hazard factors based on vehicle performance features including vehicle body, sensors, and algorithms. Furthermore, they proposed a method providing AVs and road management authorities with potential risk information on road by delivering them on the monitoring map with node and link structure.

• Journal of Korean Society of Disaster and Security
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• v.16 no.2
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• pp.75-83
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• 2023

In general, bridges are facilities installed for the purpose of easily passing through sections such as valleys and rivers. Railway bridges that run through downtown areas are damaged due to external factors such as earthquakes and collisions with passing vehicles, resulting in serious human casualties. This can cause serious human and properties damage, such as functional paralysis in downtown areas. Depending on the degree of damage, repair work such as partial repair or full replacement is in progress for the bridge where the collision occurred. When damage or deformation occurs due to collision, the repair method is determined according to the degree of deformation and the degree to which the load capacity of the bridge is affected by the deformation. In this study, a numerical analysis review was performed on the repair work for the local deformation caused by the collision of a vehicle on an old railway bridge installed and in operation in an urban area. To this end, a structural safety review of the bridge for local deformations caused by vehicle collisions was conducted. In this paper, a repair method for the accident bridge was presented based on the analysis results.

• The Journal of the Korea Contents Association
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• v.18 no.9
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• pp.411-423
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• 2018

This study was conducted to identify the correlation between driving under the influence (DUI) and bicycle riding under the influence and the impact factors of DUI among Korean adults. The participants were 3,385 Korean adults. Data were collected Seventh Korea National Health and Nutrition Examination Survey. The pervasiveness of DUI was 7.8% of the adult population in Korea. The relevance of DUI and bicycle riding under the influence was a statistically significant difference. The factors affecting of DUI were bicycle riding under the influence, aerobic physical activity, one-time drinking, frequency of binge drinking, experience aboard a driving under the influence vehicle. To prevent DUI among Korean Adults, we would need to encourage aerobic physical activity in daily and workplace, recognize that bicycle drunk riding can lead to drunk vehicle driving, and that management of alcohol use disorders and be planning to the vehicle driving before drinking.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.16 no.1
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• pp.50-63
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• 2017

While transit is inconvenient, it is also inevitable for the efficient public transportation. Reducing the number of transfers as much as possible is most important in providing the convenience of public transportation and facilitating the public transportation. As for the public transportation card data, 61,986 items on weekdays and 69,100 items on weekends were collected. Pattern analysis and traffic influence factors were analyzed using traffic data card. Trip chain results revealed that people have more transit transfers for shopping and leasure than commuting purposes on weekends and that commuting distance and time increase by 10 km and 9.9 minutes, respectively. Besides, results of the structural equation model showed that factor 1(total travel time, total travel distance), factor 2(number of people getting on and off), factor 3(transit time), and factor 4(number of bus connections, number of operations) were found to have significant effects on the number of transfers.