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- W170172009 abstract "Probe vehicular data has become a popular source to estimate and forecast traffic conditions. However, they are often spatiotemporally sparse. Reconstructing vehicle trajectories between updates is essential in order to have a sense of individual vehicle behavior and the whole traffic. This paper presents an approach to estimate the maximum likelihood trajectory (MLT) between probe data updates on arterial roads. A public data feed from transit buses in the city of San Francisco is used as a data source. Travel time statistics along the road and queue patterns at intersections are learned from historical data. The path is divided into short segments, and an Expectation Maximization (EM) algorithm is proposed for allocating travel time statistics to each segment. Then the trajectory with the maximum likelihood is generated based on segment travel time and delay allocation. The preliminary results show the reasonable trajectories for different cases. Applications of this work can be in improving traveler information systems and in estimation of signal timing and phase." @default.
- W170172009 created "2016-06-24" @default.
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- W170172009 date "2015-01-01" @default.
- W170172009 modified "2023-09-24" @default.
- W170172009 title "Maximum Likelihood Estimation of Vehicle Trajectory at Intersections Using Sparse Transit Bus Data" @default.
- W170172009 hasPublicationYear "2015" @default.
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