• Title/Summary/Keyword: Public Transit

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A review on the capacity selections about power system of Light Rail Transit (경량전철 전력시스템 용량선정에 대한 검토)

  • Lee, Jae-Bong;Oh, Sung-Hyo;Song, Ji-Hoon
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.390-400
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    • 2011
  • Light rail are being constructed in cities have populations of mare than 700 thousand in the country as well as many cities in the world as an environmental and a low caron public transit. This paper reviews the capacity selections of electric power system about Light rail transit according to rail, vehicles, operation conditions.

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Recent Trends in the Intelligent Surveillance Technologies (도시철도 지능형 감시시스템에 대한 국외기술 동향 분석)

  • An, Tae-Ki;Shin, Jeong-Ryol
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.630-635
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    • 2008
  • An urban transit is representative public transportation which lots of people take everyday. Especially, the station of urban transit is one of the very important public civil infrastructures. From the teachings of subway fire disaster occurred at Daegu on 2003, a certain incident might create large numbers of deaths or injuries and a lot of damages to the subway station without having an accurate grasp of emergency situation and doing proper action on the situation. Therefore, the passive surveillance system, which means the present CCTV based system, needs to be changed into the active one. The active surveillance system is the CCTV based system with intelligent softwares which affords to prevent a certain incident or trouble and its aggravation. In this paper, the state of the art of the representative companies developing intelligent softwares and its application sites of Australia and Hong Kong are briefly introduced. Finally, with the consideration of its recent trends, some technical contents for the intelligent surveillance system of domestic urban transit are briefly described.

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Improvement on the Urban Transportation System in Pusan Area (부산지역 도시교통체계의 개선방안에 관한 연구)

    • Journal of Korean Port Research
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    • v.8 no.1
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    • pp.3-15
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    • 1994
  • Most of Cities are suffering from the traffic congestion problem with the vehicles increased. Especially, the City of Pusan is experiencing the severest traffic congestion with the lower read capacity and the higher travel demand than any other cities in the country. Thus, the purpose of this study was to grasp the conditions, review the problems and finally suggest the improvements which we faced at this time for the construction of the Urban Transportation System considered in Pusan area. Based upon the results, it was concluded that firstly the Urban Transportation System(UTS) in Pusan area should be constructed by the Public Transportation System in the center of the Public Transit Modes(i.e., bus and subway), secondly the Para-transit Modes(i.e., Light Rail Transit, LRT) introduced, and thirdly the Transportation Demand Management(TDM) implemented with the expansion of the transportation facilities if possible.

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A Comparative Study on Land Use and Spatial form of TOD Models in The United States and Japan, from a City-Scale Perspective

  • Hong Yuan;Yongming Zhang;Na Xu;Siting Chen
    • International Journal of High-Rise Buildings
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    • v.12 no.1
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    • pp.49-61
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    • 2023
  • The transit-oriented development (TOD) model can effectively help to solve urban problems and promote sustainable urban development. The United States and Japan are widely considered the earliest two countries to start TOD practices; however, the origins of TOD models in the two countries were different. The TOD practices in the two countries formed distinct characteristics, yet their differences have been underexplored. This study aims to grasp the characteristics of the TOD model in the two countries through a systematic comparative analysis of 10 typical cities in the United States and Japan that have adopted the TOD model. This paper compares the case cities' three key aspects of the TOD model: public transit system, spatial form, and land use, and summarizes the characteristics of TOD models in the two countries from a city-level perspective, to help deepen the global understanding of TOD.

Analysing Potential Improvement of Public Transit Services in OD Level Using Time-Distance Accessibility and Smartcard Traffic Volume (시간거리 접근성과 교통카드 기반 통행량을 이용한 OD별 잠재적 대중교통 서비스 개선량 분석)

  • YANG, Hyun-Jae;NAM, Hyun-Woo;JUN, Chul-Min
    • Journal of the Korean Association of Geographic Information Studies
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    • v.21 no.2
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    • pp.80-93
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    • 2018
  • Public transit services are generally analyzed based on the correlation of demand and supply. The computation of supply uses accessibility while demand uses travel demands estimation based on residential population. However, the traditional demand estimation has a limitation in analysing in micro-scale compared to the smartcard data traffic. This study analyzed potential improvement of public transit services using smartcard traffic data. The supply of transportation was defined using time distance accessibility. Also, time loss was calculated in those origin destination(OD) pairs where time distance accessibilities are relatively low. The proposed method was applied at Seoul. The results showed that the areas where OD pairs need improvement include Seodaemun-gu, Guro-gu and Nowon-gu.

A Logit Type of Public Transit Trip Assignment Model Considering Stepwise Transfer Coefficients (Stepwise 환승계수를 고려한 Logit 유형 대중교통통행배정모형)

  • SHIN, Seongil;BAIK, Namcheol
    • Journal of Korean Society of Transportation
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    • v.34 no.6
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    • pp.570-579
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    • 2016
  • This study proposes a concept of Stepwise Transfer Coefficient(STC) which implies greater transfer cost with increasing the number of transfers. Thus, the public transport information system provides the choice sets of travel routes by the consideration of not only transportation time but also the optimum number of transfers. However, path choice problems that involve STC are found to include non additive cost, which requires additional route enumeration works. Discussions on route enumeration in actual transportation networks is very complicated, thereby warranting a theoretical examination of route search considering STC. From these points of view, this study results in a probability based transit trip assignment model including STC. This research also uses incoming link based entire route deletion method. The entire route deletion method proposed herein simplifies construction of an aggregation of possible routes by theoretically supporting the process of enumeration of the different routes from origin to destination. Conclusively, the STC reflected route based logit model is proposed as a public transportation transit trip assignment model.

A Study on Categorizing the Types of Transit Accessibility by Residence and Working Place and Identifying its Association to Personal Transit Travel Frequency (주거와 직장의 대중교통 접근성 유형화와 대중교통 통행발생량과의 연관성에 관한 연구)

  • Sung, Hyungun
    • Journal of Korean Society of Transportation
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    • v.31 no.2
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    • pp.20-32
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    • 2013
  • This study is aimed at identifying the relationship of transit accessibility types to its related travel frequency in the Seoul metropolitan area. A multi-level poisson regression model is employed after categorizing transit accessibility into 18 types based on locations of residential and work workplace. Analysis results offer three policy implications in improving transit use in the Seoul metropolitan area. First, increase in transit ridership can be more effectively attained when policies concerning both competitive and complementary relationships between bus and rail transit are incorporated. Second, transfer system needs to be focused on such two modal perspectives as one travels from Seoul to suburban area and residential areas given the fact that walking accessibility to bus transit is good but that to rail transit is poor. Third, it is more effective to emphasize rail transit priority rather than bus transit, especially for the travel from suburban area to the city of Seoul in order to increase transit ridership.

Study for Planning and Guideline for Select the Reasonable Mountainous Light Rail Transit System (산악용 경전철의 계획 및 시스템 선정에 관한 고찰)

  • Lee, Duck-Young;Lee, An-Ho
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.1683-1688
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    • 2008
  • These days, in Korea, according to improving the standard living, people generally work 5 days a week and it results more leisure hours. On weekends or in specific season, travel to mountain region around the major city is much in demand, and, in case of public transportation, the demand exceeds the supply. So, people tend to go other places, even overseas, for their holidays. The situation in Korea reflects the needs for mountainous light rail transit system with the object of convenient and rapid transport of passengers. In this paper, the guideline for mountainous light rail transit planing is proposed, and the representative mountainous light rail transit system is analyzed to choose the proper mountainous light rail transit system which adapts the demand for transportation and the terrain in Korea.

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A Study on the RAMS for Maintenance CALS system for Urban transit (도시철도유지보수체계 시스템의 RAMS에 대한 연구)

  • Lee H.Y.;Prak K.J.;Ahn T.K.;Kim G.D.;Yoon S.K.;Lee S.I.
    • Proceedings of the KSR Conference
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    • 2003.05a
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    • pp.145-150
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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 CALS 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 CALS system from 2001 to 2005. The RAMS for management computerization system are utilized in a variety of CALS 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. In this paper, This system include RAMS(reliability, availability, maintainability and safety) of the vehicles shall be enhanced in the future.

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A Study on the construction methodology of preventing maintenance system for Urban transit (도시철도 유지보수 예방정비체계 구축 방법론에 관한 연구)

  • Lee H. Y.;Park K. J.;Ahn T. K.;Han S. Y.;Suh M. W.
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.1400-1402
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    • 2004
  • 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.

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