KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Estimation of Probe Vehicle Penetration Rates on Multi-Lane Streets Using the Locations of Probe Vehicles in Queues at Signalized Intersections

신호교차로 대기행렬 내 프로브 차량의 위치 정보를 활용한 다차로 접근로에서의 프로브 차량 비율 추정

  • 모대상 (서울대학교 건설환경공학부) ;
  • 이재현 (서울대학교 건설환경공학부) ;
  • 김선호 (서울대학교 건설환경공학부) ;
  • 이청원 (서울대학교 건설환경공학부)
  • Received : 2020.11.19
  • Accepted : 2020.12.11
  • Published : 2021.04.01
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Abstract

The probe vehicle penetration rate is a required parameter in the estimation of entire volume, density, and queue length from probe vehicle data. The previous studies have proposed estimation methods without point detectors, which are based on probability structures for the locations of probe and non-probe vehicles; however, such methods are poorly suited to the case of multi-lane streets. Therefore, this study aimed to estimate the probe vehicle penetration rate at a multi-lane intersection and introduce a probability distribution of the queue length of each lane. Although a gap between estimates and observations was found, the estimates followed the trend of observations; the estimation could be improved by the correction factor hereafter. This study is expected to be used as a basic study for the estimation of entire volume, density, and queue length at multi-lane intersections without point detectors.

프로브 차량 데이터로부터 전수화 된 교통량, 밀도, 대기행렬 길이를 추정하기 위해 프로브 차량 비율이 필요하다. 이를 위해 기존 연구는 프로브차량과 일반 차량의 위치에 대한 확률구조를 활용하여 지점 검지기 없이 프로브 차량 비율을 추정하는 방법을 제시하였으나, 기존 연구의 방법론은 다차로 도로에 적용할 수 없다는 한계가 있었다. 따라서 본 연구는 각 차로의 대기행렬 길이에 확률분포를 도입함으로써 다차로 접근로에서 프로브 차량 비율을 추정하고자 하였다. 사례연구 결과, 추정치와 관측치 간 이격이 있었으나, 추정치가 관측치의 경향을 따라가는 것으로 나타났으며, 향후 보정계수 도입 등을 통하여 추정치를 개선할 여지가 있었다. 본 연구는 지점 검지기가 없는 다차로 접근로에서 전수화 된 교통량, 밀도, 대기행렬 길이를 추정하기 위한 기초연구로서 활용될 것으로 기대된다.

Keywords

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