[논문]일교통량을 이용한 통행시간 신뢰도 평가

오흥운

doi:10.12652/ksce.2023.43.5.0631

일교통량을 이용한 통행시간 신뢰도 평가
Evaluation of Travel Time Reliability using Daily Traffic Volumes 원문보기

KSCE Journal of Civil and Environmental Engineering Research = 대한토목학회논문집, v.43 no.5, 2023년, pp.631 - 638

초록
AI-Helper

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.

Abstract ▼ AI-Helper

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.

주제어

표/그림 (9)

그림 Fig. 1. Hourly Speed-Traffic Flow Relationship Observed
그림 Fig. 2. Daily Traffic Flow-Avg Speed Relationship Observed
표 Table 1. AADT-LOS Relationship in Korean Highway Task Manual
그림 Fig. 3. Daily Traffic Flow-Averaged Speed Relationship Model Suggested
표 Table 2. Observed Daily Standard Deviations (StD) and COVs by Speeds (^R2=0.89)
표 Table 3. Characteristics of 4 Sections for Reliability Calculation
표 Table 4. Two Evaluation Points at Each Section
표 Table 5. Calculation of Probability at each Section and Average Travel Time
표 Table 6. Calculation Results of Reliability Based Characteristics

참고문헌 (20)

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상세보기
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원문보기 상세보기
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