지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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PURPOSES: Used in transportation planning and traffic engineering, almost traffic simulation tools have input variable values optimized by overseas traffic flow attribution because they are almost developed in overseas country. Thus, model calibration appropriated for internal traffic flow attribution is needed to improve reliability of simulation method. METHODS : In this study, the traffic flow model calibration is based on expressways. For model calibration, it needs to define each expressway link according to attribution, thus it is classified by design speed, geometric conditions and number of lanes. And modified greenshield model is used as traffic flow model. RESULTS : The result of the traffic model calibration indicates that internal congested density is lower than overseas. And the result of analysis according to the link attribution indicates that the more design speed and number of lanes increase, the lower the minimum speed, the higher the congested density. CONCLUSIONS: In the traffic simulation tool developed in overseas, the traffic flow is different as design speed and number of lanes, but road segment don't affect traffic flow. Therefore, these results need to apply reasonably to internal traffic simulation method.
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참고문헌 (12)
참고문헌 신청
Balakrishna, R. / 2007 / Offline calibration of dynamic traffic assignment: simultaneous demand-and-supply estimation / Transportation Research Record: Journal of the Transportation Research Board 2003(1):50~58
Chenhao Liu / 2010 / Temporal Stability of Macroscopic Traffic Stream Models
Lee, Eui-Eun / 1999 / An Analysis of Highway Traffic Flow using 3- Regime Model / KSCE Journal of Civil Engineering 19:3~5
Leclercq, L. / 2005 / Calibration of flow-density relationships on urban streets / Transportation Research Record: Journal of the Transportation Research Board 1934(1):226~234
Ngoduy, D. / 2004 / Comparison of numerical schemes for macroscopic traffic flow models / Transportation Research Record: Journal of the Transportation Research Board 1876(1):52~61
Chenhao Liu / 2010 / Temporal Stability of Macroscopic Traffic Stream Models
Lee, Eui-Eun / 1999 / An Analysis of Highway Traffic Flow using 3- Regime Model / KSCE Journal of Civil Engineering 19:3~5
Leclercq, L. / 2005 / Calibration of flow-density relationships on urban streets / Transportation Research Record: Journal of the Transportation Research Board 1934(1):226~234
Ngoduy, D. / 2004 / Comparison of numerical schemes for macroscopic traffic flow models / Transportation Research Record: Journal of the Transportation Research Board 1876(1):52~61
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