• Journal of Ship and Ocean Technology
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• 제10권3호
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• pp.36-48
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• 2006

The train ferry, accommodating trains roll on and off, is often called as 'Railway on the Sea' or 'Blue High-way' since she can connect the railways or roads segregated by the sea and improve the accessibility and continuity of land transport systems. The ferry is especially appropriate to the intermodal transport routes mostly passing through the land but have relatively short sea segment. As the train ferry can considerably reduce the cost and time for cargo handling and modal shift and unnecessitates excessive initial investment on infrastructures such as large harbor cranes or vast container yards, introduction of train Ro-Ro ferries lessen the total transport cost for door-to-door transportation with full exploitation of the existing railway system. All the ports placed in Shandong, Liaoning and Jiangsu provinces of China are connected to the hinterlands via well developed railway and road systems. Therefore, realization of the Incheon-Yantai train ferry system will link Korea railways to TCR and the 4,131-kilometer-long Longhai-Lanxin Railway, along the famous Eurasian Continental Bridge. In the present paper, the Incheon-Yantai train ferry will be introduced as a good example of an efficient multimodal short sea shipping system for Northeast Asia.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.2455-2462
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• 2008

Global warming has become one of the most important social responsibilities. After Kyoto protocol for greenhouse gas reduction by climatic change convention came into effect, developed countries are presenting various policies to reduce greenhouse gas that is produced in transport field. One of those policies is modal shift that change from road freight to sea, inland waterway and railway transportation that is eco-friendly. Because increase of road freight brings about road congestion and accident, logistics cost, air pollution and green house gases. Railways are superior to all other modes of transport in mass transportability, high speed, timeliness, safety and environmental-friendliness, but the railway industry has been pushed behind in competition. In developed country's government actively promoted relevant legislation, policies, and countermeasures known as modal shift policies to shift freight transport from road to large volume mode such as railway and ship. In this paper, we discuss the current situation in modal shift, compare it with cases in other countries EU and Japan, identify problems in Korea, and propose the following ways to enhance competitiveness of rail freight.

• Journal of Information Processing Systems
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• 제14권2호
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• pp.487-498
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• 2018

The purpose of the high-speed railway construction is to better satisfy passenger travel demands. Accordingly, the design of the train working plan must also take a full account of the interests of passengers. Aiming at problems, such as the complex transport organization and different speed trains coexisting, combined with the existing research on the train working plan optimization model, the multiobjective bi-level programming model of the high-speed railway passenger train working plan was established. This model considers the interests of passengers as the center and also takes into account the interests of railway transport enterprises. Specifically, passenger travel cost and travel time minimizations are both considered as the objectives of upper-level programming, whereas railway enterprise profit maximization is regarded as the objective of the lower-level programming. The model solution algorithm based on genetic algorithm was proposed. Through an example analysis, the feasibility and rationality of the model and algorithm were proved.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.378-381
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• 2009

This paper investigates the productivity growth in Korean railway transport. The productivity growth is calculated by a process of measuring of pure efficiency change index(PECI), scale efficiency change index(SECI), and technical change index(TCI), using Data envelopment analysis (DEA) method. The data cover the period 1999$\sim$2006; 1999$\sim$2003 are the pre-structural reform years and the post-structural reform years are 2004$\sim$2006. The framework for the analysis is Malmquist Productivity Index (MPI) of the to investigate the impacts of structural reform on productivity growth, respectively. The inputs considered are the length of operating line, the number of staff, the number of coach and wagon, and the outputs are the trains movement of passenger and freight, and the traffic of passenger and freight. Results indicate that Korean railway experienced a annual productivity growth of approx. 3% after the structural reform.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 춘계학술대회 논문집
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• pp.272-279
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• 2003

There are two methodologies to increase transport capacity of railway. One is to invest railroad equipment or vehicles, and the other is to improve operation efficiency through optimization. All of these is intended to increase transport capacity by improving the line capacity, So far, we treat the line capacity as the criteria for evaluating investment alternatives or for restricting train frequencies, and this criteria is calculated statical and experimental numerical formula. But, line capacity has special attribute that changes dynamically according to operational conditions, so there is a need of new line capacity estimation system. Korea Railroad Research Institute(KRRI) proposed a new line capacity estimation system based on the probability simulation method. In this research. we perform analysis of line capacity for the railway improvement alternatives, and to represent the results.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.465-470
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• 2002

Construction of Yamanashi Maglev Test Line in Japan was proceeded based on "superconducting maglev Yamanshi Testline plan" approved by Ministry of Transport Government of Japan in 1990, which was performed by Yamanashi Maglev Test Line construction project team organized by personnel of Japan Railway Construction Public Corporation, RTRI and Central Japan Railway Company, and overall adjustment test was performed. Yamanashi Maglev experimental project team was organized, sponsored by RTRI and Central Japan Railway Company from April in 1997. Running test for the application was performed by this project team. Technical availability was proved by "superconducting maglev committee" of Ministry of Transport Government in March, 2000. In this paper, train radio system by LCX and by millimeter wave will be reviewed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.255-262
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• 2011

2010년 철도화물 수송톤수는 약 39백만 톤이며, 이 중 석탄수송은 약 6.2백만 톤으로 전체 철도수송의 약 15.7%를 차지하고 있다. 또한 철도화물 수입 중 석탄수송이 약 15.8% 수준인 517억 원으로 철도수송 품목에 있어서 수송량 및 수익에 있어서 3번째로 큰 비중을 나타내고 있다. 그러나, 철도수송에서 큰 비중을 차지하고 있는 석탄은 정부의 무연탄 감산정책과 주로 트럭운송에 의지하는 비발전용 무연탄에 대한 우선 공급으로 철도수송이 크게 감소하고 있으며, 이에 대해 석탄취급이 많은 강원권 물류 수송수익에 큰 영향을 주고 있다. 이에 따라 본 연구에서는 강원권 화물운송 중 석탄수송이 감소하는 근본적인 원인에 대해 살펴보고, 이를 해결할 수 있는 방안에 대해 살펴보았다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.3278-3288
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• 2011

Bulk freight is transported by a freight car, ship and tank lorry without packaging in a state of particles or powders. In korea, the main bulk freight include oil, grain, coal, cement, iron ore and these are occupied nearly 30% of the volume of gross domestic freight transportation. Therefore it is in important to transport efficient bulk freight transport system for the improvement of national distribution competitive as raw material for industry. Generally environment-friendly transfer modes such as railway and sea transport play an important role in bulk freight transport due to the mass transfer characteristics of bulk freight. This study is carried out for examining the problem of oil, grain, coal, cement, ore transportation through analyzing distribution flow of items and understanding characters of transfer modes.

• 한국철도학회지
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• 제9권2호
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• pp.19-24
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• 2006

Green gas emissions Trading System(ETS) came into effect in the Europe last year 2005. All transport modes have tried to reduce green gas emission and EU member countries are promoting the use of environmental friendly transport mode to avoid economic loss due to green gas emission. Besides ETS, rapidly rising of oil price and peak oil urge to invest more in the environmental friendly public transport mode and to discourage the use of private cars. The operation of KTX is estimated to bring external cost reduction up to 570 bil. won in 2004 based on European external unit costs of transport modes. This result implies that the expansion of high speed rail network and reconsideration of East-West high speed rail network which is not considered because of weak economic validity is required.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1416-1425
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• 2008

Urban railway carries large numbers of passengers during the rush hour. According to the announcement of Ministry of Land Transport and Maritime Affairs(MLTM), 221% of the congestion rate is reported in the SeoulMetro No.2 outer circle line from sadang to bangbea between eight and nine o'clock in the morning. This study analyzes the cause of the client's dissatisfaction about SeoulMetro such as the train delay, and decides the preference rank of the alternatives for congestion alleviation and enhancement of the transport capacity using Analytic Hierarchy Process(AHP).