지역간 대중교통의 배차간격과 대기시간 관계에 대한 실증 연구
An Empirical Study on the Relationship between Headway of Inter-region Public Transport and Waiting Time
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대중교통 대기시간은 대중교통 이용에 있어 중요한 요소 중 하나로 작용하지만, 국내 대부분의 대중교통 연구사례에서는 대기시간을 일률적으로 배차간격의 절반으로 가정하고 있다. 이에 본 연구에서는 지역간 대중교통수단을 대상으로 대중교통 배차간격과 대기시간의 관계성을 모형을 통하여 실증적으로 규명하였다. 여객시설물 이용실태조사 자료와 운행시각표 정보를 연계하여 각 배차간격별 평균 대기시간을 산정한 결과 배차간격이 증가할수록 대기시간은 증가하는 패턴을 보이지만 증가폭은 점차 낮아지고 있는 추세를 보이고 있음을 확인하였다. 이를 고려하여 로그모형을 적용하였으며, 이 결과 대중교통 배차간격이 이용자들의 평균 대기시간을 70% 이상 설명하고 있고, 관측값과 비교하였을 경우에서도 로그선형모형에서 관측값과 유사한 패턴을 가지고 있음을 확인하였다. 이는 대중교통 관련 모형 설정 및 분석에 있어 배차간격의 절반을 일률적으로 적용하는 기존의 가정을 충분히 대체할 수 있을 것이라 예상된다.
Abstract
The waiting time for public transport acts as one of the important factors in using public transport, but most public transport research cases in Korea assume that the waiting time is uniformly half of the headway. Therefore, in this study a statistical model was utilized to investigate the relationship between public transport headway and waiting time for inter-region public transport through a model. As a result of calculating the average waiting time for each headway by linking the survey data and the operation timetable information, it was confirmed that the waiting time increased as the headway increased with diminishing rate. In consideration of this, a log-linear model was applied, and as a result, it was confirmed that the interval between public transport headway explained more than 70% of the average waiting time of users, and that even when compared with the observed values, the log model had a similar pattern to the observed values. This is expected to be able to sufficiently replace the existing assumption of uniformly applying half of the headway in setting and analyzing public transport-related models.
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