• 한국철도학회논문집
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• 제6권2호
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• pp.108-113
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• 2003

The safety of staff, customers and of general Public in general viewed as one of the most important requirements in the urban transit. The maintenance computerization system for car of urban transit is a part of standardization and development of urban transit system, and We have been performed the establishment of maintenance computerization system from 2001 to 2005. The RAMS(reliability, availability, maintainability and safety) estimation for maintenance computerization system are utilized in a variety of computerization system for user's convenience and safety in maintenance. Ever since its inception though, the urban transit has searched for ways to improve reliability, availability, maintainability and safety of the railway subsystem. Provision of a reliable maintenance system include RAMS of the vehicles plays a very important role in achieving a safe system.

• The Journal of Asian Finance, Economics and Business
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• 제7권12호
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• pp.115-121
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• 2020

This study aims to investigate the effects of restrictions in economic activity on the spread of COVID-19 in the Philippines. This research employs daily time-series data of confirmed new COVID-19 cases, Apple mobility trends (i.e., use of public transport to destinations, volume of people driving, and amount of walking to destinations) and Google community mobility (i.e., visits to transit stations, visits to workplaces, and staying-at-home) indicators covering the period February 17 to September 11, 2020. The analysis starts by establishing the correlation pattern of new confirmed COVID-19 daily infections to each independent variable. The results show negative linear correlation of the number of new COVID-19 daily infections with less visit to transit station, increase stay-at-home, less use of public transport, and less amount of walking to destinations. Interestingly, the number of new COVID-19 daily infections indicates some form of positive linear correlation with visits to workplaces and volume of people driving. Moreover, employing robust least square regression via the method of MM-estimation, major findings reveal that across mobility measures, staying-at-home has the highest impact on reducing the spread of COVID-19, followed by visiting transit stations less, less use of public transport, less amount of walking, and less workplace visits.

• 대한교통학회지
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• 제21권1호
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• pp.65-75
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• 2003

교통혼잡 문제가 점점 심각해짐에 따라 대중교통의 중요성은 날로 부각되며, 대중교통을 지원하기 위한 정책들이 속속 입안되고 있어 대중교통을 심도 있게 분석할 수 있는 틀의 개발은 필연적이라 할 수 있다. 이에 본 연구는 대중교통의 특성을 고려하는 대중교통 통행배정모형의 개발을 목적으로 수행되었다. 본 연구에서 개발한 대중교통 통행배정모형은 기존의 대중교통 통행배정모형이 개별차량과 다른 대중교통의 특성을 정확히 반영하고 있지 못하다는 한계를 극복하고자, 최적경로 탐색에는 유전자 알고리즘(Genetic Algorithm)을 통행량 배정에는 로짓모형을 기반으로 한 확률적 통행량 배정모형(Stochastic Network Loading Model)을 이용하였다.

• 도시과학
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• 제7권2호
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• pp.1-9
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• 2018

In this study, Analysis of DRT model and contribustion based on the case of local governments adopting the Demand Responsive Transit(DRT) in order to provide transportation in public transportation service weak area. Based on the case of Yeoju Area, the contribution of the DRT was analyzed. The DRT model was established as a fixed and call type model with taxi and bus transportation. Based on the results of the happy taxi service in Yeoju Area in 2016, the contribution of DRT was analyzed. According to the happy taxi performance of Yeoju city, it was introduced to 27 villages, and operated 4,188 times. And 9,111 people used it and Yeoju Area supported about 53 million Won. The contribution of local governments was analyzed in terms of local government, users, and social aspects. On local government aspects, we analyzed the budget cuts and complaints resolution. On the user aspects, we analyzed waiting time reduction, walking time reduction, travel time reduction, comfort, punctuality, and stability. On social aspects, we analyzed taxi and regional economy activation, and convenience of mobility.

• 한국도로학회논문집
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• 제16권2호
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• pp.107-118
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• 2014

PURPOSES : The purpose of study is to come up with ideas to improve both the use of the public bicycle and the practicality of the public bicycle system as well. METHODS : The study carried out an analysis on factors which would influence user's satisfaction by using a structural equation and then, discussed what the current public bicycle system should do to make improvements of its own. In order to Satisfaction of the public bicycle system("Tashu") in Daejeon city survey was conducted users and was based on statistical analysis SPSS 20 program, structural equation modeling program AMOS 20 was used for analysis. In addition, the reliability and validity of each question was conducted verification, to verify the hypothesis using structural equation model. RESULTS : According to the results of the analysis with the structural equation used, the connectivity, the convenience, the economic efficiency and the reliability in order were observed to have an influence on the satisfaction of the users CONCLUSIONS : The connectivity turned out to be a factor that would have the greatest concern with the satisfaction of the users. This finding was, therefore, interpreted that people who would ride the public bicycles understand them as more of a transit system that would take them, the people themselves, to another transfer rather than as some immediate transit system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.2303-2308
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• 2010

We studied the cost-volume supply characteristic of public transportation systems focused on Bi-modal Tram in the main cities to analyze the applicability and status for the new transit system Bi-modal Tram as public transportation system. The operation cost considering the characteristic of vehicle, facilities, operation and average cost for respective public transportation system and the time cost considering the travel and transfer time are defined to the social cost, and the cost-volume supply curve is based on this social cost. The cost-volume supply characteristic between public transportation modes in the city is determined on the basis of cost-volume supply curve. Through the comparison between cost-volume supply characteristic of main transportation systems, it is analyzed about the relation between public transportation systems in the city and the characteristic for proper service provision. The application of Bi-modal Tram in the city is concluded that it is effective to reduce the social cost on the existing public transportation system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.143-149
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• 2002

There are a lot of differences in the Eastern and Western space culture. Especially, Comparing to Japanese, Koreans are not good at utilizing the small space and react effectively. Therefore, the interior space of public transportation needs to be relatively developed to highly reasonable level in Korea. The purpose of this paper is to propose the concept of Korean tradition in urban transit interior layout, which means vernacular design. The interior layout should be made in terms of the emotional aspect not functional one. In order to study the notion of national character, this study refers the concept of interior layout of the public transportation to the layout of traditional architecture and modern office. The research of vernacular design can provide national character and traditional design and can make a success in a practical use and a visual effect. This study based on the national differences of space will be proposed the outline of interior layout and the shape of interior trims in the public transportation in Korea.

• 한국ITS학회 논문지
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• 제17권3호
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• pp.72-86
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• 2018

운행시간표 기반 대중교통 경로 탐색 알고리즘은 운행계획에 따른 정류장별 출 도착 시각을 이용하여 최소 이동 시간이 소요되는 단일 경로를 산출한다. 다만, 경로 계산 과정에서 환승 저항, 대안 경로 선택 등의 추가 요소들을 반영하는데 한계가 있다. 본 연구는 환승 저항 및 다중 경로 탐색이 반영된 개선된 RAPTOR 알고리즘을 제안한다. 환승 저항은 환승 시점에 적용되며, 교통수단 유형을 구분하여 적용하였다. 본 연구에서는 수도권 대중교통 이용승객의 실제 이동 경로를 기준으로 개선 전 후의 알고리즘 결과를 분석하였다. 이를 통해 제시한 알고리즘이 승객의 다양한 경로 선택 기준을 반영한다는 것을 확인하였다.

• 한국ITS학회 논문지
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• 제7권2호
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• pp.1-12
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• 2008

최근 극심함 교통혼잡 및 유류비 상승으로 인해 대중교통(특히 버스)의 역할이 더욱 크게 부각되고 있으나, 일부 황금노선을 제외한 대부분의 버스노선이 지속적인 이용수요감소, 수입감소, 경영수지악화, 서비스질 저하, 이용자감소의 악순환을 끊기 위해 버스의 공공성 강화의 한 방편인 준공영제(관리는 공공, 운영은 민영)를 도입하였으나, 당초 민간의 효율성을 제고하고자 했던 의도와는 다르게 운수회사의 자발적인 운행관리가 이루어지지 않는 등 부작용을 해결하기 위한 공공부분의 운행관리가 매우 중요한 요소가 되었다. 본 연구에서는 준공영제 하에서, APTS 자료를 활용하여 민간 운수회사의 평가관리가 가능하고, 시민이 피부로 느낄 수 있는 버스신뢰성 제고를 위해 서울시에서 관리중인 운행관리항목의 종류와 분석방법론, 운행관리결과, 문제점 및 향후 대책에 대하여 고찰하였으며, 이러한 연구내용이 이미 준공영제를 도입하였거나, 도입을 준비하고 있는 타 시도의 운행관리정책에 기여할 수 있을 것이다.

• 한국도로학회논문집
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• 제13권4호
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• pp.211-220
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• 2011

최근 대중교통지향형개발(TOD)이 활발해지며, 역세권의 환경 변화를 통하여 국내의 대중교통 이용 증진을 시키기 위해서는 TOD 통합계획요소를 종합적으로 고려한 역세권 유형과 이용수요에 관한 실증분석이 전제되어야 향후 계획수립시 활용이 가능 할 것이다. 본 연구는 서울시 역세권을 대상으로 다양한 TOD 영향요인을 파악하고, 대중교통 이용수요와 연관성을 규명하기 위한 실증분석을 진행하였다. TOD의 대표적 요소인 Density, Diversity, Accessibility에 대한 자료를 수집하고, 요인분석과 회귀모형을 구축하였다. 분석결과 (1) 요인분석을 토대로 7개 영향요인이 도출되었으며, Factor 1(Diversity/토지이용복합도 (LUM)), Factor 2(Density/개발밀도수준), Factor 3(Accessibility/대중교통시설공급수준), Factor 4(Design/가로설계수준), Factor 5(Green/연계교통시설(보행자, 자전거), Factor 6(Design/지하철시설규모), Factor 7(Accessibility/대중교통운영수준)로 유형화되었다. (2) 요인-회귀분석 결과를 토대로 역세권 승하차 인원에 긍정적(+) 영향을 미치는 주요 요인은 Factor 1(Diversity : 토지이용복합도(LUM) 요인), Factor 3(Accessibility : 대중교통시설공급수준), Factor 2(Density : 개발밀도수준), Factor 5(Design/연계교통시설(보행자, 자전거), Factor 6(지하철시설규모)로 나타났다. 다음으로 역세권의 승하차 인원에 부정적(-) 영향은 Factor 7(Accessibility/대중교통운영수준)로 나타났으며, 가장 높은 영향력을 가지는 것으로 나타났다. 이는 지하철과 버스의 배차간격이 증가할 경우 이용수요가 감소하기 때문이다.