• Title/Summary/Keyword: metro transit rapidization

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Analysis of Acceleration and Deceleration on High Performance Train for A Metropolitan Rapid Transit System (대피선 최소화를 고려한 광역·도시철도 급행화를 위한 고성능 열차 가감속도 분석)

  • KO, Kyeong Jun;KIM, Jung Tai;KIM, Moo Sun;JANG, Dong Uk;HONG, Jae Sung;RYU, Sang Hwan;JUNG, Jong Deok
    • Journal of Korean Society of Transportation
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    • v.33 no.6
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    • pp.564-574
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    • 2015
  • As shown by the popularity of the rapid train in the Seoul Metro Line No. 9, the demand for the rapidization of the metro transit has been continuously increased. However, it needs tremendous cost to construct new additional infrastructures to the existing line for the rapidization. In order to overcome the problem, utilizing the existing infrastructures such as crossing tracks as railroad sidetracks can be considered to be a good method of reducing the cost. In this case, there is a way exploiting the existing train as an express train and the advanced train, which increases both acceleration and deceleration, as a local train, but achievable acceleration and deceleration have not been analyzed rigorously. In this paper, we analyze feasible ranges and optimal values of both acceleration and deceleration of the advanced train analytically when we consider the rapidization of the metro transit utilizing the existing infrastructures and verify the results in Seoul Metro Line No. 3. Simulation results show ranges and optimal values of achievable acceleration and deceleration exist when minimum gap between an express train and a local train is smaller than 40 seconds.