• Title/Summary/Keyword: Transit Service

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Develpment of Analysis and Evaluation Model for a bus Transit Route Network Design (버스 노선망 설계를 위한 평가모형 개발)

  • Han, Jong-Hak;Lee, Seung-Jae;Kim, Jong-Hyeong
    • Journal of Korean Society of Transportation
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    • v.23 no.2
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    • pp.161-172
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    • 2005
  • This study is to develop Bus Transit Route Analysis and Evaluation Model that can product the quantitative performance measures for Bus Transit Route Network Design. So far, in Korea, there are no so many models that evaluate a variety of other performance measures or service quality that are of concern to both the transit users and operator because of lower-level bus database system and transit route network analysis algorithm's limit. The BTRAEM in this research differ from the previous approach in that the BTRAEM employs a multiple path transit trip assignment model that explicitly considers the transfer and different travel time after boarding. And we develop input-output data structure and quantitative performance measure for the BTRAEM. In the numerical experimental applying BTRAEM to Mandl transit network, We got the meaningful results on performance measure of bus transit route network. In the future, we expect BTRAEM to give a good solution in real transit network.

Control Strategy of Transit Signal Priority by S-BRT Driveway (S-BRT 주행로별 대중교통 우선신호 제어 전략)

  • Kim, Minji;Han, Yohee;Kim, Youngchan
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.21 no.5
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    • pp.78-89
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    • 2022
  • Super - Bus Rapid Transit (S-BRT), adding the advantages of urban railroads to BRT, has emerged to solve the problem of low speed and reliability of the existing BRT. Notably, the S-BRT driveway is classified into exclusive lanes and roads, as BRT, in the domestic guidelines. However, S-BRT and BRT have different operating goals and characteristics, so it is necessary to systematize the S-BRT driveway. Therefore, this study classified an S-BRT driveway into exclusive lane, shared lane with overtaking lane, and shared lane without overtaking lane based on domestic conditions. Subsequently, a control strategy for transit signal priority in each driveway was presented by the study based on the characteristics of the driveway to achieve the S-BRT target service level. Finally, the S-BRT target service level was almost achieved, and the travel speed was high and increased in the order respectively in the exclusive lane, shared lane with overtaking lane, and shared lane without overtaking lane in the study. Hence, it is important to operate a transit signal priority considering the characteristics of each driveway when operating the S-BRT. In essence, this study is expected to be used as a reference for driveway design and transit signal priority operation when introducing S-BRT in each local government in the future.

Evaluation of Metro Services based on Transit Smart Card Data (A Case Study of Incheon Line 1) (스마트카드 데이터를 활용한 도시철도 서비스 평가 (인천 1호선의 차내혼잡과 정시성을 중심으로))

  • Eom, Jin-Ki;Choi, Myoung-Hun;Kim, Dae-Sung;Lee, Jun;Song, Ji-Young
    • Journal of the Korean Society for Railway
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    • v.15 no.1
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    • pp.80-87
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    • 2012
  • This study analyzed the quality of a commuter rail service of Incheon line 1 with respect to two service measures such as occupancy (crowdedness) and punctuality based on transit smart card data collected in 2009. In order to analyze the metro services by individual fleet, we aggregated the personal level card data into the fleet operated in each planned schedule. The results show a low level of service for both crowdedness and punctuality during peak hours at the line segment from 'Gyeyang' to 'International business district'. Further, a close relationship between vehicle occupancy and punctuality is found, which illustrates high passenger demand causes successive metro delay.

Evaluation of Dynamic Behavior of Rail Joints on Personal Rapid Transit Track (소형무인경전철(PRT)궤도 레일이음매의 동적거동 분석)

  • Choi, Jung-Youl;Kim, Jun-Hyung
    • Journal of the Korean Society of Safety
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    • v.31 no.5
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    • pp.89-94
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    • 2016
  • The objective of this study was to estimate the dynamic behavior of a personal rapid transit(PRT) track system using a rail of rectangular tube section and a rail joint of sliding type, and to compare the results with the normal rail and rail joint of a PRT track system by performing field measurements using actual vehicles running along the service lines. The measured vertical displacement of rail and sleeper, and vertical acceleration of rail for the normal rail and rail joint section were found to be similar, and the rail joint of sliding type satisfied the design specifications of the track impact factor for a conventional railway track. The experimental results showed that the overall dynamic response of the rail joint were found to be similar to or less than that of the normal rail, therefore the rail joint of sliding type for PRT track system was sufficient to ensure a stability and safety of PRT track system.

Modelling and Analysis for Sharing of Full Electric Vehicles in Small-sized Cities (소규모 도시를 위한 전전기 자동차 세어링 서비스 시스템 모델링 및 분석 연구)

  • Jin, Young-Goun;Cho, Hyun-Seob
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.4
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    • pp.1857-1862
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    • 2012
  • It is very difficult to construct and manager public transit, like subway, in small city. In this paper, we suggest full electric vehicle sharing service framework as a public transit system in small city. The suggested system will reduce environment pollution and increase resource usage efficiency. The simulation result shows that the suggested electric vehicle sharing system can reduce traffic congestion and lower city road stress.

Review on RAM Data Management to Urban Maglev Transit (자기부상열차 RAM DATA 관리방안)

  • Lee, Chang-Deok;Kang, Chan-Yong
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.191-196
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    • 2007
  • This paper is reviewed RAM(Reliability, Availability and Maintainability) data table utilized for RAM data management to Urban Maglev Transit. As railway systems become more complex, the RAM requirements are reinforced to ensure that a design meets Reliability, Availability, Maintainability criteria. Therefore, it needs the efficient management for RAM data of railway system to meet RAM target. At this study, RAM data management format is suggested to ensure reliability and maintainability based on acquired experience for overseas rolling stock. This RAM data table and FMECA(Failure Mode Effect Criticality Analysis) table are useful to the calculation of MTBF(Mean Time Between Failure), MTBSF(Mean Time Between Service Failure) and Maintainability. Also, this RAM management table will be efficient to improve the RAM evaluation to Urban Maglev Transit.

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Condition Monitoring System Construction for Electrical Equipments of Metropolitan Rapid Transit (도시철도 전력설비 상태감시 시스템 구성)

  • Park, Hyun-Soo;Choi, Gwang-Bum;Uh, Soo-Young;Ryu, Ki-Seon;Im, Hyeong-Gil;Jung, Ho-Sung;Park, Young;Ko, Sung-Bum
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.447-451
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    • 2009
  • Metropolitan rapid transit has been used by one of a main transport service for several decades, but there are no monitoring system for electrical equipment condition which can cause enormous economic loss and social problem if fault occurs. Recently, necessity of condition monitoring system for electrical equipment fault came to the fore, we became carrying out a research project for a design of electrical equipment lifetime estimation system for metropolitan rapid transit. In this paper, basic design result of condition monitoring system and specification of transformer partial discharge detection system are presented, which are part of entire lifetime estimation system. Definition of target apparatus and monitoring method determined by analysis of user requirement from each railway company and, each railway company's opinions and requests were collected sufficiently by surveys and discussion.

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The Study of Headway Improvement on Signaling System Des19n of Urban Transit (도시철도 신호시스템 설계에서의 운전시격 향상에 대한 연구)

  • Baek, Jong-Hyen;An, Tae-Ki;Jeong, Rag-Gyo;Han, Seong-Ho;Byun, Yeun-Sub;Park, Hyun-Jun
    • Proceedings of the KIEE Conference
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    • 1999.07a
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    • pp.492-494
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    • 1999
  • To improve safety operation of urban transit, compatible design of signaling system is most important factor at future train operation and management. Therefore, signaling system should be designed compatible transport demand of target year. In addition, signaling system should be designed improved train safety, based fail-safe principle. Most of all, to solve passenger concentration, high density and to improve efficiency of train operation. Headway improvement of train is most important. Train organization length of new urban transit as light rail is generally shorter than EMU. Therefore, to increase passenger service and operation efficiency, minimum headway of one minute in this system should be important required.

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On the Optimal Vehicle Routing of City-Wide PRT based on Synchronization (동기화 기반 City-Wide PRT의 최적경로설정 방안 연구)

  • Kim, Dong-Hee;Lee, Tae-Yun
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.1203-1208
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    • 2010
  • Recently, there are environmental issues for sustainable transportation system to pursue the energy-efficient and environment-friendly public urban transit. These transportation system needs to offer demand-oriented high-quality service being on the same level with cab service for urban space. PRT(Personal Rapid Transit), small track-guided vehicle, is repeatedly mentioned as a possible alternative for the new urban public transportion system, but but there are not many researches on the operational optimal routing for PRT network. In this paper, the concept of PRT and general optimal routing methods are reviewed. And we suggest the optimal routing method for city-wide PRT network with multi-vehicles and stations, junctions and directional arcs. Futher research directions for PRT routing are presented.

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On the Optimal Routing for City-Wide Synchronous PRT (도심지 서비스를 위한 Synchronous PRT의 최적경로설정)

  • Kim, Dong-Hee
    • Journal of the Korea Safety Management & Science
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    • v.12 no.3
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    • pp.315-320
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    • 2010
  • Recently, there are environmental issues for sustainable transportation system to pursue the energy-efficient and environment-friendly public urban transit. These transportation system needs to offer demand-oriented high-quality service being on the same level with cab service for urban space. PRT(Personal Rapid Transit), small track-guided vehicle, is repeatedly mentioned as a possible alternative for the new urban public transportion system, but but there are not many researches on the operational optimal routing for PRT network. In this paper, the concept of PRT and general optimal routing methods are reviewed. And we suggest the optimal routing method for city-wide PRT network with multi-vehicles and stations, junctions and directional arcs. Futher research directions for PRT routing are presented.