• Title/Summary/Keyword: 도시철도 혼잡도

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A Study on the improvement of Metro station's congestion with an environmental-friendly approach (친환경적 도시철도 혼잡역사 개선에 관한 연구 방안)

  • Baek, Jong-Myeong;Shin, Min-Ho;Kim, Han-Bae
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.181-199
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    • 2011
  • Concentration of people in urban areas and development around Metro make exceed the passenger number which was calculated when the Metro station was built, in the result the Metro stations are crowed this is the study on the improvement of Metro station's congestion in urban areas for ensuring the passenger safety, the space of evacuation path and promoting the more pleasant riding environment with an environmental- friendly approach.

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A Digital Twin Simulation Model for Reducing Congestion of Urban Railways in Busan (부산광역시 도시철도 혼잡도 완화를 위한 디지털 트윈 시뮬레이션 모델 개발)

  • Choi, Seon Han;Choi, Piljoo;Chang, Won-Du;Lee, Jihwan
    • Journal of Korea Multimedia Society
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    • v.23 no.10
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    • pp.1270-1285
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    • 2020
  • As a representative concept of the fourth industrial revolution era where everything is digitized, digital twin means analyzing and optimizing a complex system using a simulation model synchronized with the system. In this paper, we propose a digital twin simulation model for the efficient operation of urban railways in Busan. Due to the geopolitical nature of Busan, where there are many mountains and narrow roads, the railways are more useful than other public transportation. However, this inversely results in a high level of congestion, which is an inconvenience to citizens and may be fatal to the spread of the virus, such as COVID19. Considering these characteristics, the proposed model analyzes the congestion level of the railways in Busan. The model is developed based on a mathematical formalism called discrete-event system specification and deduces the congestion level and the average waiting time of passengers depending on the train schedule. In addition, a new schedule to reduce the congestion level is derived through particle swarm optimization, which helps the efficient operation of the railways. Although the model is developed for the railways in Busan, it can also be used for railways in other cities where a high level of congestion is a problem.

Development of an Algorithm for Estimating Subway Platform Congestion Using Public Transportation Card Data (대중교통카드 자료를 활용한 도시철도 승강장 혼잡도 추정 알고리즘 개발)

  • Lee, Ho;Choi, Jin-Kyung
    • Journal of the Korean Society for Railway
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    • v.18 no.3
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    • pp.270-277
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    • 2015
  • In some sections of the Seoul Metropolitan Subway, severe congestion can be observed during rush hours and on specific days. The subway operators have been conducting regular surveys to measure the level of congestion on trains: the results are then used to make plans for congestion reduction. However, the survey has so far focused just on train' congestion and has been unable to determine non-recurring congestion due to special events. This study develops an algorithm to estimate the platform congestion rate by time using individual public transportation card data. The algorithm is evaluated by comparison of the estimated congestion rate and the ground truth data that are actually observed at non-transfer subway stations on Seoul subway line 2. The error rates are within ${pm}2%$ and the performance of the algorithm is fairly good. However, varying walking times from gates to platforms, which are applied to both non-peak periods and peak time periods, are needed to improve the algorithm.

Load Factor Decrease In The Seoul Metro Circle Line through Analyzing Passenger OD Demand (2호선 혼잡구간 OD수요 분리유도를 통한 혼잡도 개선 방안 (교통카드 빅데이터 분석을 중심으로))

  • Eom, Jin Ki;Song, Ji-Young;Lee, Kwang-Sub
    • Journal of the Korean Society for Railway
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    • v.17 no.6
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    • pp.457-465
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    • 2014
  • This study proposes a policy for urban railway travel demand management system in order to decrease the load factor of the Seoul metro Circle line, particularly for the segment between Sadang and Samsung stations, through analyzing the transit smart card data. We propose mixed train operations of the existing Circle line and a line that goes toward Samsung station in order to transport passengers that have two distinct groups: those with the destination of Samsung station and those with destinations after Samsung station. The introduction of a mixed train operation that encourages passengers passing through Samsung station to take a Circle line train will decrease the congested load factor by 11.3% during the morning peak hours using the mixed train operation of the Circle and Samsung lines. This policy could be an effective method to decrease the load factor and improve the comfort of rail passengers without extra investment in the railway facilities.

Diurnal Variation of the Dust Concentration in a Railway Tunnel (도시철도 터널 내 부유먼지의 일변화 특징)

  • Woo, Sang Hee;Kim, Jong Bum;Hwang, Moon Se;Tahk, Gil-Hyun;Yoon, Hwa Hyeon;Yook, Se-Jin;Bae, Gwi-Nam
    • Journal of the Korean Society for Railway
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    • v.19 no.3
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    • pp.280-287
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    • 2016
  • In railway tunnels, dust is generated when trains run due to the contact between the wheels and the rails. The generated dust is suspended due to the train-induced airflow, with some of it deposited due to gravitational sedimentation. In this study, the diurnal variation of the dust concentration was investigated in a railway tunnel. A single lane of a tunnel was selected in which to observe more easily the dust concentration due to the passing of a train. Four particle-measuring instruments were utilized to detect dust ranging from 5nm to $20{\mu}m$. To synchronize the train passing time at the measuring location, a three-dimensional ultrasonic anemometer and a video camera were used. It was found that the dust concentration was significantly increased from $50{\mu}g/m^3$ to $150{\mu}g/m^3$ due to the train. Particularly, the dust concentration was greatly increased to more than $250{\mu}g/m^3$ during the morning rush-hour times.