The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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Optimal Signal Times for Active Bus Signal Priority on Median Bus Lane Using Deterministic Delay Model

중앙버스전용차로상에서 결정적 지체모형을 이용한 능동형 버스우선신호의 최적 신호시간 산출방안

  • 김태운 (한국건설기술연구원 도로교통정보사업단) ;
  • 정영제 (도로교통공단) ;
  • 김영찬 (서울시립대학교 교통공학과)
  • Received : 2013.12.10
  • Accepted : 2014.02.05
  • Published : 2014.02.28
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Abstract

Bus signal priority is a name for various techniques to speed up bus public transport services at intersections with traffic signals. In this study propose methodology to optimize signal times for Early green, Green extension out of the active bus signal priority using deterministic delay model in isolated intersection on median bus lane. Fluctuation is found in the vehicle delay and person delay in the event that using this methodology redistributed to green time and checking slack green time is correct value by sensitivity analysis. As a result of the study, car delay is increased a little and person delay is decreased. As a result of slack green time sensitivity, delay is not much in it if variation of slack green time under 30%. But this methodology effectiveness is under claimed capacity if variation of slack green time over 30%.

버스우선신호는 도로상에서 버스에 물리적, 운영적 통행우선권을 부여하는 방법으로 신호 교차로에서 버스의 정시성 및 신속성, 서비스 개선을 통해 승객의 수송 효율과 도로 교통의 수송 용량을 높일 수 있는 대중교통 우선정책 기법이다. 본 연구에서는 결정적 지체모형의 하나인 HCM모형을 이용하여 중앙버스전용차로가 존재하는 독립교차로에서 능동형 버스우선신호 제공 방법론을 제시하였다. 능동형 버스우선신호의 기법 중 Early green과 Green extension 기법을 이용하여 버스가 이용하지 않는 비우선현시의 여유녹색시간을 버스가 이용하는 우선현시에 재분배하는 버스우선신호 방법론을 제시하였다. 또한, 이 방법론을 통하여 비우선현시의 여유녹색시간을 우선현시에 재분배 하였을 때 차량당 지체 및 사람당 지체가 어떻게 변화하는지에 대하여 분석하고 여유녹색시간의 민감도 분석을 통해 여유녹색시간이 정확한 값인지 알아보았다. 그 결과 교차로 전체의 차량당 지체는 다소 증가하고 사람당 지체는 감소하는 것으로 나타났다. 또한, 민감도 분석결과 여유녹색시간의 변화가 30%미만일 경우 지체의 큰 차이는 없었으나 30%이상일 경우 버스우선신호의 효과가 떨어지는 것으로 분석 되었다.

Keywords

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