KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Evaluation of Travel Time Reliability using Daily Traffic Volumes

일교통량을 이용한 통행시간 신뢰도 평가

  • 오흥운 (경기대학교 창의공과대학 도시.교통공학전공)
  • Received : 2022.10.24
  • Accepted : 2022.11.18
  • Published : 2023.10.01
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Abstract

This paper is to introduce methodologies of travel time reliability evaluation using daily traffic volumes. The methodologies include desirable speed concept, the relation between averaged daily speeds and daily traffic volumes, the standardized way in integration of travel time deviations obtained from continuous highway sections. The study began with traffic data collection from a freeway line with long lasting congestion. And then, provided establishment of the relation between averaged daily speeds and daily traffic volumes, and usability of Point estimate method (PEM) to integrate travel time deviations of sections. Based on the relation between averaged daily speeds and daily traffic volumes, it is identified that travel time reliability begins to decrease around LOS (Level of Service) C even before LOS D or F. It may be concluded that travel time reliability could be evaluated based on daily traffic volumes in highway sections using standardized PEM. The methodologies introduced in the paper, could be useful in practicing evaluation of travel time reliability during the works of highway operation or highway planning.

본 논문은 일교통량을 이용한 통행시간 신뢰도 평가방법을 제시하고 있다. 희망속도의 도입, 일평균 통행속도와 일교통량간의 관계 설정, 구간 별 통행시간편차를 대표값으로 결합하는 방법을 포함하고 있다. 지정체가 며칠 동안 지속되는 특성을 가진 고속도로 교통정보를 수집하였고, 이를 이용하여 일평균 통행속도와 일교통량과의 관계를 정립하였다. 구간별 통행시간 편차를 대표값으로 결합하는 방법인 PEM (Point estimate method) 기법을 활용하여 통계적 대표 특성을 추정하였다. 일평균 통행속도와 일교통량의 관계가 설정되었고, 일교통량이 LOS D나 F 이전인 LOSC 부근임 에도 통행시간 신뢰도가 감소하기 시작하는 것이 나타났다. 일교통량만으로도 통행시간 신뢰도를 산출할 수 있게 되었고 통행시간 편차의 결합 방법이 표준화 되었으므로 향후의 도로계획과 운영 과정에서 통행시간 신뢰도가 용이하게 구해질 수 있을것으로 기대된다.

Keywords

Acknowledgement

이 논문은 2022학년도 경기대학교 연구년 수혜로 연구되었습니다.

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