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Geographic Information System for Positive Train Control : Issues and Prospects
김시곤(Kim Sigon),김창호(changho Kim),장성용(Jang Seong-Yong) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
본 논문은 철도안전운행을 위하여 능동적으로 철도차량을 제어를 지리정보시스템기법을 활용하는 방안을 제시하고 있다. 이를 위해서는 철도차량의 위치를 얼마나 정확하게 추적 및 표출이 가능한지를 검토해 보았다. 구체적으로는 GIS의 정의와 기능을 살펴보고 GIS기법을 활용한 능동적 철도차량제어의 에시를 정리하였다. 능동적 철도차량을 제어를 위한 핵심요소인 철도차량 위치자료의 정확성을 수치지도의 축적별로 분석하였다. 최종적으로는 능동적으로 철도차량을 제어를 지리정보시스템기법을 활용하기 위해 칠요한 주요쟁점사항을 정리하였다.
A Study on the Weekday HOV-Lane Policy on Kyoungbu Expressway in Korea
Young-Jong Kwon, Jaehak Oh, Sigon Kim 서울시립대학교 도시과학연구원 2005 International journal of urban sciences (IJUS) Vol. No.
HOV-lane policy is well known as a way of alleviating urban traffic problems. The government of Korea is expecting to solve the metropolitan traffic problems in the southern part of the Seoul Metropolitan Area in short period by introducing the HOV-lane policy on a segment of Kyoungbu expressway. This study estimates the effectiveness of the weekday HOV-lane policy. This study analyzes the data collected during both the a.m. and p.m. peak periods. In the study, there are three measures of effectiveness for the HOV lane policy. They include the travel speed on the HOV lane, the movement of passengers, and travel cost including travel time and fuel consumption. The study results are as follows. Firstly, the average travel speed can be increased. Secondly, the total number of passengers can be increased. Finally, the travel cost can be decreased. As a conclusion, the introduction of the weekday HOV-lane policy can be effective as a way of solving metropolitan traffic problems. For the success of the HOV-lane policy, there should be some other measures. They include the expansion of metropolitan bus lines, the improvement of bus operating system, and the improvement of transfer facilities.
조창희(Changhee Jo),김시곤(Sigon Kim),안찬기(Changi Ahn) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Postmortem evaluation through the dictionary and the lack of points for the wrong strategy to respond to the avoid the prediction is important. However the prevailing system of ex post facto assessment of postmortem simply does not have statistical figures to be provided only for the conditions. Thus in this study rail business is mainly evaluation procedures and evaluation of the verification system of ex post facto evaluation as to the issue do not improve.