• Title/Summary/Keyword: Public transportation

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The Development Trend of Transportation Information System through Transportation Card Data (교통카드자료를 활용한 교통정보시스템 발전 방향)

  • Kim, Se-Won;Sohn, Moo-Sung;Min, Jae-Hong;Oh, Seog-Mun
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.1835-1847
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    • 2011
  • After conducting demonstration of transportation card for bus from Godeok-dong to Sangil-dong in 1996, due to continuously support for public transportation, the transportation card utilization of metropolitan public transportation passengers is currently going beyond 90%. In the current situation, transportation information system is mainly focused on road operation and control, offer of real time information and research of transportation information system using transportation card data which is differentiated by previous transportation information system is needed to study. This paper compare and analyze transportation information system, which is being used to each country, based on foreign examples of activating use of transportation card then introduce figure of advanced transportation information system which provide decision making feature for improving policy and institution of public transportation based on transportation card data, scientific analysis of passenger information, information of demand forecasting, variation and so on for constructing new route.

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A Genetic Algorithm for Searching Shortest Path in Public Transportation Network (대중교통망에서의 최단경로 탐색을 위한 유전자 알고리즘)

  • 장인성;박승헌
    • Korean Management Science Review
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    • v.18 no.1
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    • pp.105-118
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    • 2001
  • The common shortest path problem is to find the shortest route between two specified nodes in a transportation network with only one traffic mode. The public transportation network with multiple traffic mode is a more realistic representation of the transportation system in the real world, but it is difficult for the conventional shortest path algorithms to deal with. The genetic algorithm (GA) is applied to solve this problem. The objective function is to minimize the sum of total service time and total transfer time. The individual description, the coding rule and the genetic operators are proposed for this problem.

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A Study of Mode Choice Analysis of Blind Spot Areas for Public Transportation in Four Metropolitan Cities (대도시권 대중교통 사각지대 통행자들의 수단선택 모형 개발 - 급행버스 노선 도입에 따른 선호의식 조사를 중심으로 -)

  • Kim, Hwang Bae
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.32 no.6D
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    • pp.565-569
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    • 2012
  • This study selected blind spot areas for public transportation in four metropolitan cities including Busan, Daegue, Gwangju, and Daejeon. Then this study developed a nested logit model and analyzed the changes of mode choice behaviors after adopting rapid transit system using stated preference(SP) survey. As the study results, blind spot areas have more potential public transportation demand and tendency to shift to public transportation from autos than built-up areas. This study results can be utilized to evaluate demand changes for new rapid transit system in a circular expressway and an arterial highway connecting CBD and surrounding areas. The study results also can be utilized to analyze the potential public transportation demand in the surrounding areas.

Development and Achievement of Head-Up Display in Public Transit for Reducing Accidents (버스 교통사고 감소를 위한 대중교통 HUD 기술 개발과 성과)

  • Roh, Chang-Gyun;Park, Bum Jin;Kang, Weon-Eui
    • Journal of Korean Society of Transportation
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    • v.32 no.5
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    • pp.513-521
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    • 2014
  • Korea's traffic congestion costs including other social costs due to accidents, environmental pollution and increased demand is increasing every year. In this regard, direction of government policy was geared toward suppression of vehicle demand and activation of public transportation, which is determined to be the best solution with limited supply of infrastructure such as road facilities. This study aims to implement public transport bus-only Head-Up Display (hereafter called HUD) technology which displays public transport information required for a bus driver on the front glass of a bus. The public transport bus-only HUD not only prevents gaze dispersion of bus drivers but also helps to reduce the heavy workload of bus drivers by providing information required for driving. Ultimately, the final research purpose is a reduction of bus traffic accidents by 50% caused by negligence in keeping eyes forward or sideways.

A Study of Blind Spot Analysis for Public Transportation by Level of Service (LOS) in Public Transportation Supply Service (GIS를 이용한 시내버스와 도시철도 공급서비스 수준 측면의 대중교통 사각지대 분석에 관한 연구)

  • Chang, Kyung Uk;Kim, Hwang Bae;Kim, Young Seok;Oh, Jae Hak
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.31 no.3D
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    • pp.383-389
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    • 2011
  • The purpose of this paper is to analyze the blind spot for public transportation by level of service(LOS) in public transportation supply service. For the purpose, we proposed indices of service coverage area, service frequency and hours of service and analysis method for them. Service coverage area analysis is to decide station location and network design for the maximum beneficiary area. Moreover, we can use the service frequency is for the maximum service frequency decision and hours of service is for the minimum operation hours. The results of this study are applied to the plan of minimum supply service, minimum service frequency and minimum operation hours for city and national public transportation plan.

Route Selection in the Network of Public Transportation using the GA and the GIS (유전자 알고리즘과 GIS를 이용한 대중교통 경로선택에 관한 연구)

  • 전철민
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.21 no.4
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    • pp.323-330
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    • 2003
  • GIS-based applications for route guidance are increasingly developed recently, but most of them are for self$.$driven cars. Although some of them are intended for public transportation, they show limitations in dealing with time constraints problems taken place in transfer areas. Developing a public transportation guidance system requires the fallowing aspects: (i) people may change transportation means not only within the same type but also among different modes such as between buses and subways, and (ii) the system should take into account the time taken in transfer from one mode to the other. This study suggests the framework for developing a public transportation guidance system that generates optimized paths in the transportation network of mixed means including buses, subways and other modes. For this study, the Genetic Algorithms are used to find the best routes that take into account transfer time and other service-time constraints. The method for constructing the data structure in the GIS was also suggested.

A Study on Building of City Image through the Design System for Public Transportation - Focus on the Design Case for Seoul Public Transportation - (대중교통 디자인시스템을 통한 도시이미지 형성에 관한 연구 - 서울시 대중교통 디자인의 아이덴티피케이션 개념적용과 시스템화 방안 -)

  • Yang, Seung-Ju;Kim, Byung-Jin
    • Archives of design research
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    • v.19 no.1 s.63
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    • pp.89-98
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    • 2006
  • As the concept of city changes city is viewed in the perspective of business to make profits, not in the perspective of physical space. In the case of Korea urbanization processed over the level of 80% and the formation of identity is suggested for the way to improve city competitiveness as of globalization and liberalization. Seoulentered the level of developed countries in the perspective of functions and facilities, but its image is evaluated poor because of the lack of cultural competitiveness, tourismattractiveness and service system. Dependency of public transportation which is public facilities representing city indirectly is very high, but in information service and visual systems of pubic transportation operations and management are not enough and differentiated image and loyalty are hard to find. In 2004 government of city of Seoul suggested modifications, but compared to London, Paris and Tokyo consistent system, the lack of control and management of use environment of design, excessive visual information and destruction of connection are pointed out. Therefore to solve these problems the introduction of design system is needed to develop identity after applying characteristics and regulations for using to disordered visual stuff. These procedurescan be explained as City Identity Program (CIP) and this study tries to embody city image through public transportation design system. As the study method for this the status of public transportation design system of London, Paris and Tokyo were searched and compared to that of Seoul. Based on this systematization of symbol marks per public transportation being used right now, the development of design guidelines to form identity, relation of design and the strategy of systematization per method and media were proposed.

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Design and Implementation of Space Time Point for Real-time Public Transportation Route Guidance (실시간 대중교통 경로안내를 위한 Space Time Point 모델의 설계와 구현)

  • Kim, Soo-Ho;Joo, Yong-Jin;Park, Soo-Hong
    • Spatial Information Research
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    • v.20 no.3
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    • pp.83-93
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    • 2012
  • Recent environmental concerns have made interest in environment-friendly transportation means such as walking, biking, and public transportation. However, since it is difficult to move long distance by walking or biking, their scope of application is rather limited. On the other hand, public transportation can solve traffic congestion, a recent social issue, though its usability may depend on its time schedule. Currently available information services on public transportation in the Web do not reflect well such traits of the public transportation; thus, in some cases, they may provide wrong information to end users. To solve such problems and provide information based on timetable of public transportations, this paper proposes a STP(Space Time Point) data model. Unlike existing space-time data models, this model recognizes the bottommost element of an object as a point and structures these points in hierarchical way to define an object. In particular, It can make it possible to implement a variety of dynamic spatial objects changing object information according to time. An objective of this study is to design a STP model for bus and subway based on timetables of public transportation in Daejeon area and builds a system to provide path navigation. With the designed navigation function, a path from the Daejeon National Cemetery to Hannam University was searched by time slot. The result showed that the system provided different paths by time, as the system guided different paths when bus operation was limited in midnight. As existing data model could not provide such results, it is confirmed that the system can provide path navigation based on real-time traffic information. It is expected that based on such functionality, it is possible to provide additional functionalities by applying diverse data models such as real-time transport information or traffic history information.

Environmental Equity Analysis of the Accessibility to Public Transportation Services in Daegu City (대구시 대중교통서비스의 접근성에 대한 환경적 형평성 분석)

  • Kim, Ah-Yeon;Jun, Byong-Woon
    • Journal of the Korean Association of Geographic Information Studies
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    • v.15 no.1
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    • pp.76-86
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    • 2012
  • The purpose of this study is to investigate the environmental equity of the accessibility to public transportation services in the city of Daegu. The 2005 census data as well as bus stop and subway station datasets were integrated for building the GIS database. Public transportation service areas were then identified by a coverage method. Mann Whitney U test was used for statistically comparing the socioeconomic characteristics over different levels of access to the public transportation services. Both Dong-gu, Suseong-gu, Dalseo-gu, and Buk-gu located outside of the city had worse accessibility than others while Jung-gu, Seo-gu, and Nam-gu had better accessibility than others. There appeared no environmental inequity pattern in terms of the percentages of men, women, and teenagers over the city of Daegu whereas there existed some environmental inequity pattern in terms of the percentages of people above the age of 65 and people below poverty line. This environmental inequity pattern would be caused by some factors. Firstly, the lower income class has tended to reside in the declined or blighted areas far away from public transportation facilities since this class can not afford to pay expensive rents and land prices around the main roads with higher accessibility. Many old people belonging to the lower income class also reside in the declined or blighted areas. Secondly, there has been no law to locate bus stops and subway stations considering residents' socioeconomic characteristics and the spatial distribution of public transportation facilities has been not managed systematically by the city government. This research would shed insight on building the public transportation policy to locate bus stops and subway stations and to select the routes of buses and subways considering the spatial distribution of residents' socioeconomic characteristics.