Estimation of Dynamic Link Flows and Origin-Destination Matrices from Lower Polling Frequency Probe Vehicle Data
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概要
- 論文の詳細を見る
we present a methodology of estimating dynamic link flows and origin-destination matrices using lower polling frequency probe vehicle data (e.g. one point every 30-60s). Link travel time is first obtained from map-matched probe points using a method of proportional allocation. A derived speed-density function is then fitted for different types of roads. A Bayesian method that carefully incorporates prior information is used to estimate dynamic link flows from link travel speed. A bi-level generalized least-square (GLS) estimator is formulated so as to estimate dynamic OD matrices from estimated link flows. A traffic simulator in VISSIM is developed for a median size urban network using an open data set. The results validate the advantages of the proposed method for lower polling frequency probe vehicle data.
- Eastern Asia Society for Transportation Studiesの論文
著者
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Morikawa Takayuki
Department Of Otolaryngology Tokyo Women's Medical University School Of Medicine
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MIWA Tomio
EcoTopia science institute, Nagoya University
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CAO Peng
Department of Civil Engineering, Nagoya University
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YAMAMOTO Toshiyuki
EcoTopia Science Institute, Nagoya University
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MORIKAWA Takayuki
Department of Environmental Engineering and Architecture
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